diff --git a/manual/plugin_examples/editor_demo/main.py b/manual/plugin_examples/editor_demo/main.py
index 85c0dcdd69..88b032a563 100644
--- a/manual/plugin_examples/editor_demo/main.py
+++ b/manual/plugin_examples/editor_demo/main.py
@@ -8,7 +8,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
 import re
 from PyQt5.Qt import QAction, QInputDialog
-from cssutils.css import CSSRule
+from css_parser.css import CSSRule
 
 # The base class that all tools must inherit from
 from calibre.gui2.tweak_book.plugin import Tool
@@ -17,6 +17,7 @@ from calibre import force_unicode
 from calibre.gui2 import error_dialog
 from calibre.ebooks.oeb.polish.container import OEB_DOCS, OEB_STYLES, serialize
 
+
 class DemoTool(Tool):
 
     #: Set this to a unique name it will be used as a key
@@ -79,7 +80,7 @@ class DemoTool(Tool):
         # stylesheets, <style> tags and style="" attributes
         for name, media_type in container.mime_map.iteritems():
             if media_type in OEB_STYLES:
-                # A stylesheet. Parsed stylesheets are cssutils CSSStylesheet
+                # A stylesheet. Parsed stylesheets are css_parser CSSStylesheet
                 # objects.
                 self.magnify_stylesheet(container.parsed(name), factor)
                 container.dirty(name)  # Tell the container that we have changed the stylesheet
diff --git a/src/calibre/customize/profiles.py b/src/calibre/customize/profiles.py
index a927e56665..10057f1cc1 100644
--- a/src/calibre/customize/profiles.py
+++ b/src/calibre/customize/profiles.py
@@ -262,7 +262,7 @@ class OutputProfile(Plugin):
     touchscreen = False
     touchscreen_news_css = ''
     #: A list of extra (beyond CSS 2.1) modules supported by the device
-    #: Format is a cssutils profile dictionary (see iPad for example)
+    #: Format is a css_parser profile dictionary (see iPad for example)
     extra_css_modules = []
     #: If True, the date is appended to the title of downloaded news
     periodical_date_in_title = True
diff --git a/src/calibre/devices/kobo/driver.py b/src/calibre/devices/kobo/driver.py
index 7b988c2650..ab4ed4b795 100644
--- a/src/calibre/devices/kobo/driver.py
+++ b/src/calibre/devices/kobo/driver.py
@@ -2036,12 +2036,12 @@ class KOBOTOUCH(KOBO):
 
     def get_extra_css(self):
         extra_sheet = None
-        from cssutils.css import CSSRule
+        from css_parser.css import CSSRule
 
         if self.modifying_css():
             extra_css_path = os.path.join(self._main_prefix, self.KOBO_EXTRA_CSSFILE)
             if os.path.exists(extra_css_path):
-                from cssutils import parseFile as cssparseFile
+                from css_parser import parseFile as cssparseFile
                 try:
                     extra_sheet = cssparseFile(extra_css_path)
                     debug_print("KoboTouch:get_extra_css: Using extra CSS in {0} ({1} rules)".format(extra_css_path, len(extra_sheet.cssRules)))
@@ -2068,7 +2068,7 @@ class KOBOTOUCH(KOBO):
         return [r for r in sheet.cssRules.rulesOfType(css_rule)]
 
     def get_extra_css_rules_widow_orphan(self, sheet):
-        from cssutils.css import CSSRule
+        from css_parser.css import CSSRule
         return [r for r in self.get_extra_css_rules(sheet, CSSRule.STYLE_RULE)
                     if (r.style['widows'] or r.style['orphans'])]
 
@@ -2158,7 +2158,7 @@ class KOBOTOUCH(KOBO):
         return True
 
     def _modify_stylesheet(self, sheet, fileext, is_dirty=False):
-        from cssutils.css import CSSRule
+        from css_parser.css import CSSRule
 
         # if fileext in (EPUB_EXT, KEPUB_EXT):
 
diff --git a/src/calibre/ebooks/conversion/plugins/epub_output.py b/src/calibre/ebooks/conversion/plugins/epub_output.py
index d7446b1c98..829227599e 100644
--- a/src/calibre/ebooks/conversion/plugins/epub_output.py
+++ b/src/calibre/ebooks/conversion/plugins/epub_output.py
@@ -497,7 +497,7 @@ class EPUBOutput(OutputFormatPlugin):
 
             if stylesheet is not None:
                 # ADE doesn't render lists correctly if they have left margins
-                from cssutils.css import CSSRule
+                from css_parser.css import CSSRule
                 for lb in XPath('//h:ul[@class]|//h:ol[@class]')(root):
                     sel = '.'+lb.get('class')
                     for rule in stylesheet.data.cssRules.rulesOfType(CSSRule.STYLE_RULE):
diff --git a/src/calibre/ebooks/conversion/plugins/fb2_input.py b/src/calibre/ebooks/conversion/plugins/fb2_input.py
index dc77055cf7..53a05049af 100644
--- a/src/calibre/ebooks/conversion/plugins/fb2_input.py
+++ b/src/calibre/ebooks/conversion/plugins/fb2_input.py
@@ -73,8 +73,8 @@ class FB2Input(InputFormatPlugin):
             css += etree.tostring(s, encoding=unicode, method='text',
                     with_tail=False) + '\n\n'
         if css:
-            import cssutils, logging
-            parser = cssutils.CSSParser(fetcher=None,
+            import css_parser, logging
+            parser = css_parser.CSSParser(fetcher=None,
                     log=logging.getLogger('calibre.css'))
 
             XHTML_CSS_NAMESPACE = '@namespace "%s";\n' % XHTML_NS
diff --git a/src/calibre/ebooks/conversion/plugins/html_input.py b/src/calibre/ebooks/conversion/plugins/html_input.py
index 2e84194ec1..03903cbf01 100644
--- a/src/calibre/ebooks/conversion/plugins/html_input.py
+++ b/src/calibre/ebooks/conversion/plugins/html_input.py
@@ -109,8 +109,8 @@ class HTMLInput(InputFormatPlugin):
         from calibre.ebooks.html.input import get_filelist
         from calibre.ebooks.metadata import string_to_authors
         from calibre.utils.localization import canonicalize_lang
-        import cssutils, logging
-        cssutils.log.setLevel(logging.WARN)
+        import css_parser, logging
+        css_parser.log.setLevel(logging.WARN)
         self.OEB_STYLES = OEB_STYLES
         oeb = create_oebbook(log, None, opts, self,
                 encoding=opts.input_encoding, populate=False)
@@ -189,7 +189,7 @@ class HTMLInput(InputFormatPlugin):
                     if href == item.href:
                         dpath = os.path.dirname(path)
                         break
-                cssutils.replaceUrls(item.data,
+                css_parser.replaceUrls(item.data,
                         partial(self.resource_adder, base=dpath))
 
         toc = self.oeb.toc
diff --git a/src/calibre/ebooks/conversion/plumber.py b/src/calibre/ebooks/conversion/plumber.py
index 0bd93ad6b4..a81af21e0d 100644
--- a/src/calibre/ebooks/conversion/plumber.py
+++ b/src/calibre/ebooks/conversion/plumber.py
@@ -1051,8 +1051,8 @@ OptionRecommendation(name='search_replace',
         if self.opts.embed_all_fonts or self.opts.embed_font_family:
             # Start the threaded font scanner now, for performance
             from calibre.utils.fonts.scanner import font_scanner  # noqa
-        import cssutils, logging
-        cssutils.log.setLevel(logging.WARN)
+        import css_parser, logging
+        css_parser.log.setLevel(logging.WARN)
         get_types_map()  # Ensure the mimetypes module is intialized
 
         if self.opts.debug_pipeline is not None:
diff --git a/src/calibre/ebooks/css_transform_rules.py b/src/calibre/ebooks/css_transform_rules.py
index 55e3680835..ceed5d0cd4 100644
--- a/src/calibre/ebooks/css_transform_rules.py
+++ b/src/calibre/ebooks/css_transform_rules.py
@@ -8,7 +8,7 @@ from functools import partial
 from collections import OrderedDict
 import operator
 
-from cssutils.css import Property, CSSRule
+from css_parser.css import Property, CSSRule
 
 from calibre import force_unicode
 from calibre.ebooks import parse_css_length
@@ -345,7 +345,7 @@ def export_rules(serialized_rules):
 
 def import_rules(raw_data):
     import regex
-    pat = regex.compile('\s*(\S+)\s*:\s*(.+)', flags=regex.VERSION1)
+    pat = regex.compile(r'\s*(\S+)\s*:\s*(.+)', flags=regex.VERSION1)
     current_rule = {}
 
     def sanitize(r):
diff --git a/src/calibre/ebooks/mobi/reader/markup.py b/src/calibre/ebooks/mobi/reader/markup.py
index 54e4ac38b6..99cfb9cd53 100644
--- a/src/calibre/ebooks/mobi/reader/markup.py
+++ b/src/calibre/ebooks/mobi/reader/markup.py
@@ -327,28 +327,6 @@ def upshift_markup(parts):
         parts[i] = part
 
 
-def handle_media_queries(raw):
-    # cssutils cannot handle CSS 3 media queries. We look for media queries
-    # that use amzn-mobi or amzn-kf8 and map them to a simple @media screen
-    # rule. See https://bugs.launchpad.net/bugs/1406708 for an example
-    import tinycss
-    parser = tinycss.make_full_parser()
-
-    def replace(m):
-        sheet = parser.parse_stylesheet(m.group() + '}')
-        if len(sheet.rules) > 0:
-            for mq in sheet.rules[0].media:
-                # Only accept KF8 media types
-                if (mq.media_type, mq.negated) in {('amzn-mobi', True), ('amzn-kf8', False)}:
-                    return '@media screen {'
-        else:
-            # Empty sheet, doesn't matter what we use
-            return '@media screen {'
-        return m.group()
-
-    return re.sub(r'@media\s[^{;]*?[{;]', replace, raw)
-
-
 def expand_mobi8_markup(mobi8_reader, resource_map, log):
     # First update all internal links that are based on offsets
     parts = update_internal_links(mobi8_reader, log)
@@ -390,8 +368,6 @@ def expand_mobi8_markup(mobi8_reader, resource_map, log):
             if not os.path.exists(fi.dir):
                 os.mkdir(fi.dir)
             with open(os.path.join(fi.dir, fi.fname), 'wb') as f:
-                if fi.fname.endswith('.css') and '@media' in flow:
-                    flow = handle_media_queries(flow)
                 f.write(flow.encode('utf-8'))
 
     return spine
diff --git a/src/calibre/ebooks/mobi/writer8/main.py b/src/calibre/ebooks/mobi/writer8/main.py
index c3322d2fc5..9749c49a0d 100644
--- a/src/calibre/ebooks/mobi/writer8/main.py
+++ b/src/calibre/ebooks/mobi/writer8/main.py
@@ -13,8 +13,8 @@ from collections import defaultdict, namedtuple
 from io import BytesIO
 from struct import pack
 
-import cssutils
-from cssutils.css import CSSRule
+import css_parser
+from css_parser.css import CSSRule
 from lxml import etree
 
 from calibre import isbytestring, force_unicode
@@ -77,9 +77,9 @@ class KF8Writer(object):
         ''' Duplicate data so that any changes we make to markup/CSS only
         affect KF8 output and not MOBI 6 output '''
         self._data_cache = {}
-        # Suppress cssutils logging output as it is duplicated anyway earlier
+        # Suppress css_parser logging output as it is duplicated anyway earlier
         # in the pipeline
-        cssutils.log.setLevel(logging.CRITICAL)
+        css_parser.log.setLevel(logging.CRITICAL)
         for item in self.oeb.manifest:
             if item.media_type in XML_DOCS:
                 self._data_cache[item.href] = copy.deepcopy(item.data)
@@ -87,7 +87,7 @@ class KF8Writer(object):
                 # I can't figure out how to make an efficient copy of the
                 # in-memory CSSStylesheet, as deepcopy doesn't work (raises an
                 # exception)
-                self._data_cache[item.href] = cssutils.parseString(
+                self._data_cache[item.href] = css_parser.parseString(
                         item.data.cssText, validate=False)
 
     def data(self, item):
@@ -138,9 +138,9 @@ class KF8Writer(object):
 
                 for tag in XPath('//h:style')(root):
                     if tag.text:
-                        sheet = cssutils.parseString(tag.text, validate=False)
+                        sheet = css_parser.parseString(tag.text, validate=False)
                         replacer = partial(pointer, item)
-                        cssutils.replaceUrls(sheet, replacer,
+                        css_parser.replaceUrls(sheet, replacer,
                                 ignoreImportRules=True)
                         repl = sheet.cssText
                         if isbytestring(repl):
@@ -150,7 +150,7 @@ class KF8Writer(object):
             elif item.media_type in OEB_STYLES:
                 sheet = self.data(item)
                 replacer = partial(pointer, item)
-                cssutils.replaceUrls(sheet, replacer, ignoreImportRules=True)
+                css_parser.replaceUrls(sheet, replacer, ignoreImportRules=True)
 
     def extract_css_into_flows(self):
         inlines = defaultdict(list)  # Ensure identical <style>s not repeated
@@ -194,7 +194,7 @@ class KF8Writer(object):
                 if not raw or not raw.strip():
                     extract(tag)
                     continue
-                sheet = cssutils.parseString(raw, validate=False)
+                sheet = css_parser.parseString(raw, validate=False)
                 if fix_import_rules(sheet):
                     raw = force_unicode(sheet.cssText, 'utf-8')
 
diff --git a/src/calibre/ebooks/odt/input.py b/src/calibre/ebooks/odt/input.py
index 26ed6feaa9..f2ae22839e 100644
--- a/src/calibre/ebooks/odt/input.py
+++ b/src/calibre/ebooks/odt/input.py
@@ -9,8 +9,8 @@ Convert an ODT file into a Open Ebook
 import os, logging
 
 from lxml import etree
-from cssutils import CSSParser
-from cssutils.css import CSSRule
+from css_parser import CSSParser
+from css_parser.css import CSSRule
 
 from odf.odf2xhtml import ODF2XHTML
 from odf.opendocument import load as odLoad
@@ -184,8 +184,8 @@ class Extract(ODF2XHTML):
                         x.set('class', orig + ' ' + ' '.join(extra))
 
     def do_filter_css(self, css):
-        from cssutils import parseString
-        from cssutils.css import CSSRule
+        from css_parser import parseString
+        from css_parser.css import CSSRule
         sheet = parseString(css, validate=False)
         rules = list(sheet.cssRules.rulesOfType(CSSRule.STYLE_RULE))
         sel_map = {}
@@ -301,7 +301,3 @@ class Extract(ODF2XHTML):
             with open('metadata.opf', 'wb') as f:
                 opf.render(f)
             return os.path.abspath('metadata.opf')
-
-
-
-
diff --git a/src/calibre/ebooks/oeb/base.py b/src/calibre/ebooks/oeb/base.py
index 96ea218ccd..1bd58de4d5 100644
--- a/src/calibre/ebooks/oeb/base.py
+++ b/src/calibre/ebooks/oeb/base.py
@@ -217,7 +217,7 @@ def rewrite_links(root, link_repl_func, resolve_base_href=False):
     If the ``link_repl_func`` returns None, the attribute or
     tag text will be removed completely.
     '''
-    from cssutils import replaceUrls, log, CSSParser
+    from css_parser import replaceUrls, log, CSSParser
     log.setLevel(logging.WARN)
     log.raiseExceptions = False
 
@@ -269,7 +269,7 @@ def rewrite_links(root, link_repl_func, resolve_base_href=False):
             try:
                 stext = parser.parseStyle(text, validate=False)
             except Exception:
-                # Parsing errors are raised by cssutils
+                # Parsing errors are raised by css_parser
                 continue
             replaceUrls(stext, link_repl_func)
             repl = stext.cssText.replace('\n', ' ').replace('\r',
@@ -971,8 +971,8 @@ class Manifest(object):
             return self._parse_xhtml(convert_markdown(data, title=title))
 
         def _parse_css(self, data):
-            from cssutils import CSSParser, log, resolveImports
-            from cssutils.css import CSSRule
+            from css_parser import CSSParser, log, resolveImports
+            from css_parser.css import CSSRule
             log.setLevel(logging.WARN)
             log.raiseExceptions = False
             self.oeb.log.debug('Parsing', self.href, '...')
@@ -1011,7 +1011,7 @@ class Manifest(object):
               convert and return as an lxml.etree element in the XHTML
               namespace.
             - XML content is parsed and returned as an lxml.etree element.
-            - CSS and CSS-variant content is parsed and returned as a cssutils
+            - CSS and CSS-variant content is parsed and returned as a css_parser
               CSS DOM stylesheet.
             - All other content is returned as a :class:`str` object with no
               special parsing.
diff --git a/src/calibre/ebooks/oeb/normalize_css.py b/src/calibre/ebooks/oeb/normalize_css.py
index c318cd932d..117b90520d 100644
--- a/src/calibre/ebooks/oeb/normalize_css.py
+++ b/src/calibre/ebooks/oeb/normalize_css.py
@@ -9,11 +9,8 @@ __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 from polyglot.builtins import zip
 from functools import wraps
 
-try:
-    from cssutils.css import PropertyValue
-except ImportError:
-    raise RuntimeError('You need cssutils >= 0.9.9 for calibre')
-from cssutils import profile as cssprofiles, CSSParser
+from css_parser.css import PropertyValue
+from css_parser import profile as cssprofiles, CSSParser
 from tinycss.fonts3 import parse_font, serialize_font_family
 
 DEFAULTS = {'azimuth': 'center', 'background-attachment': 'scroll',  # {{{
@@ -269,7 +266,7 @@ def condense_sheet(sheet):
 
 def test_normalization(return_tests=False):  # {{{
     import unittest
-    from cssutils import parseStyle
+    from css_parser import parseStyle
     from itertools import product
 
     class TestNormalization(unittest.TestCase):
diff --git a/src/calibre/ebooks/oeb/polish/cascade.py b/src/calibre/ebooks/oeb/polish/cascade.py
index ce8e33f86b..e0f5d1602a 100644
--- a/src/calibre/ebooks/oeb/polish/cascade.py
+++ b/src/calibre/ebooks/oeb/polish/cascade.py
@@ -10,7 +10,7 @@ from itertools import count
 from operator import itemgetter
 import re
 
-from cssutils.css import CSSStyleSheet, CSSRule, Property
+from css_parser.css import CSSStyleSheet, CSSRule, Property
 
 from css_selectors import Select, INAPPROPRIATE_PSEUDO_CLASSES, SelectorError
 from calibre import as_unicode
@@ -45,7 +45,8 @@ def iterrules(container, sheet_name, rules=None, media_rule_ok=media_allowed, ru
     :param sheet_name: The name of the sheet in the container (in case of inline style sheets, the name of the html file)
     :param media_rule_ok: A function to test if a @media rule is allowed
     :param rule_index_counter: A counter object, rule numbers will be calculated by incrementing the counter.
-    :param rule_type: Only yield rules of this type, where type is a string type name, see cssutils.css.CSSRule for the names (by default all rules are yielded)
+    :param rule_type: Only yield rules of this type, where type is a string type name, see css_parser.css.CSSRule for the names (
+                    by default all rules are yielded)
     :return: (CSSRule object, the name of the sheet from which it comes, rule index - a monotonically increasing number)
     '''
 
@@ -104,7 +105,7 @@ def iterdeclaration(decl):
 
 class Values(tuple):
 
-    ''' A tuple of `cssutils.css.Value ` (and its subclasses) objects. Also has a
+    ''' A tuple of `css_parser.css.Value ` (and its subclasses) objects. Also has a
     `sheet_name` attribute that is the canonical name relative to which URLs
     for this property should be resolved. '''
 
diff --git a/src/calibre/ebooks/oeb/polish/check/fonts.py b/src/calibre/ebooks/oeb/polish/check/fonts.py
index 628a63488b..c8d23b0d02 100644
--- a/src/calibre/ebooks/oeb/polish/check/fonts.py
+++ b/src/calibre/ebooks/oeb/polish/check/fonts.py
@@ -6,7 +6,7 @@ from __future__ import (unicode_literals, division, absolute_import,
 __license__ = 'GPL v3'
 __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 
-from cssutils.css import CSSRule
+from css_parser.css import CSSRule
 
 from calibre import force_unicode
 from calibre.ebooks.oeb.base import OEB_DOCS, OEB_STYLES
diff --git a/src/calibre/ebooks/oeb/polish/check/main.py b/src/calibre/ebooks/oeb/polish/check/main.py
index 04055f7e2b..66017e312e 100644
--- a/src/calibre/ebooks/oeb/polish/check/main.py
+++ b/src/calibre/ebooks/oeb/polish/check/main.py
@@ -50,7 +50,7 @@ def run_checks(container):
         if err.level > WARN:
             return errors
 
-    # cssutils is not thread safe
+    # css_parser is not thread safe
     for name, mt, raw in stylesheets:
         if not raw:
             errors.append(EmptyFile(name))
@@ -107,4 +107,3 @@ def fix_errors(container, errors):
                 # better to have a false positive than a false negative)
                 changed = True
     return changed
-
diff --git a/src/calibre/ebooks/oeb/polish/check/parsing.py b/src/calibre/ebooks/oeb/polish/check/parsing.py
index 3cc48e94f7..eb3c95b7ad 100644
--- a/src/calibre/ebooks/oeb/polish/check/parsing.py
+++ b/src/calibre/ebooks/oeb/polish/check/parsing.py
@@ -9,7 +9,7 @@ __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 import re
 
 from lxml.etree import XMLParser, fromstring, XMLSyntaxError
-import cssutils
+import css_parser
 
 from calibre import force_unicode, human_readable, prepare_string_for_xml
 from calibre.ebooks.chardet import replace_encoding_declarations, find_declared_encoding
@@ -432,7 +432,7 @@ class BareTextInBody(BaseError):
 
 class ErrorHandler(object):
 
-    ' Replacement logger to get useful error/warning info out of cssutils during parsing '
+    ' Replacement logger to get useful error/warning info out of css_parser during parsing '
 
     def __init__(self, name):
         # may be disabled during setting of known valid items
@@ -467,7 +467,7 @@ class ErrorHandler(object):
 
 def check_css_parsing(name, raw, line_offset=0, is_declaration=False):
     log = ErrorHandler(name)
-    parser = cssutils.CSSParser(fetcher=lambda x: (None, None), log=log)
+    parser = css_parser.CSSParser(fetcher=lambda x: (None, None), log=log)
     if is_declaration:
         parser.parseStyle(raw, validate=True)
     else:
diff --git a/src/calibre/ebooks/oeb/polish/container.py b/src/calibre/ebooks/oeb/polish/container.py
index 5eb728eaa7..d9f5f5aac2 100644
--- a/src/calibre/ebooks/oeb/polish/container.py
+++ b/src/calibre/ebooks/oeb/polish/container.py
@@ -19,7 +19,7 @@ from io import BytesIO
 from itertools import count
 from urlparse import urlparse
 
-from cssutils import getUrls, replaceUrls
+from css_parser import getUrls, replaceUrls
 from lxml import etree
 
 from calibre import CurrentDir, walk
@@ -589,7 +589,7 @@ class Container(ContainerBase):  # {{{
 
     def parsed(self, name):
         ''' Return a parsed representation of the file specified by name. For
-        HTML and XML files an lxml tree is returned. For CSS files a cssutils
+        HTML and XML files an lxml tree is returned. For CSS files a css_parser
         stylesheet is returned. Note that parsed objects are cached for
         performance. If you make any changes to the parsed object, you must
         call :meth:`dirty` so that the container knows to update the cache. See also :meth:`replace`.'''
@@ -605,7 +605,7 @@ class Container(ContainerBase):  # {{{
     def replace(self, name, obj):
         '''
         Replace the parsed object corresponding to name with obj, which must be
-        a similar object, i.e. an lxml tree for HTML/XML or a cssutils
+        a similar object, i.e. an lxml tree for HTML/XML or a css_parser
         stylesheet for a CSS file.
         '''
         self.parsed_cache[name] = obj
diff --git a/src/calibre/ebooks/oeb/polish/css.py b/src/calibre/ebooks/oeb/polish/css.py
index 4b393b939d..5b07a13a6d 100644
--- a/src/calibre/ebooks/oeb/polish/css.py
+++ b/src/calibre/ebooks/oeb/polish/css.py
@@ -9,7 +9,7 @@ __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 from collections import defaultdict
 from functools import partial
 
-from cssutils.css import CSSRule, CSSStyleDeclaration
+from css_parser.css import CSSRule, CSSStyleDeclaration
 from css_selectors import parse, SelectorSyntaxError
 
 from calibre import force_unicode
@@ -208,7 +208,7 @@ def filter_declaration(style, properties=()):
 
 
 def filter_sheet(sheet, properties=()):
-    from cssutils.css import CSSRule
+    from css_parser.css import CSSRule
     changed = False
     remove = []
     for rule in sheet.cssRules.rulesOfType(CSSRule.STYLE_RULE):
diff --git a/src/calibre/ebooks/oeb/polish/tests/cascade.py b/src/calibre/ebooks/oeb/polish/tests/cascade.py
index 9f301e062a..35a89bc580 100644
--- a/src/calibre/ebooks/oeb/polish/tests/cascade.py
+++ b/src/calibre/ebooks/oeb/polish/tests/cascade.py
@@ -8,7 +8,7 @@ __copyright__ = '2016, Kovid Goyal <kovid at kovidgoyal.net>'
 
 from functools import partial
 
-from cssutils import parseStyle
+from css_parser import parseStyle
 
 from calibre.constants import iswindows
 from calibre.ebooks.oeb.base import OEB_STYLES, OEB_DOCS
diff --git a/src/calibre/ebooks/oeb/polish/utils.py b/src/calibre/ebooks/oeb/polish/utils.py
index 36fcb7a8bc..af0688bddb 100644
--- a/src/calibre/ebooks/oeb/polish/utils.py
+++ b/src/calibre/ebooks/oeb/polish/utils.py
@@ -16,9 +16,9 @@ def guess_type(x):
     return _guess_type(x)[0] or 'application/octet-stream'
 
 
-def setup_cssutils_serialization(tab_width=2):
-    import cssutils
-    prefs = cssutils.ser.prefs
+def setup_css_parser_serialization(tab_width=2):
+    import css_parser
+    prefs = css_parser.ser.prefs
     prefs.indent = tab_width * ' '
     prefs.indentClosingBrace = False
     prefs.omitLastSemicolon = False
@@ -163,7 +163,7 @@ def parse_css(data, fname='<string>', is_declaration=False, decode=None, log_lev
     if log_level is None:
         import logging
         log_level = logging.WARNING
-    from cssutils import CSSParser, log
+    from css_parser import CSSParser, log
     from calibre.ebooks.oeb.base import _css_logger
     log.setLevel(log_level)
     log.raiseExceptions = False
diff --git a/src/calibre/ebooks/oeb/reader.py b/src/calibre/ebooks/oeb/reader.py
index 844f0c33d3..0536834888 100644
--- a/src/calibre/ebooks/oeb/reader.py
+++ b/src/calibre/ebooks/oeb/reader.py
@@ -185,7 +185,7 @@ class OEBReader(object):
         return bad
 
     def _manifest_add_missing(self, invalid):
-        import cssutils
+        import css_parser
         manifest = self.oeb.manifest
         known = set(manifest.hrefs)
         unchecked = set(manifest.values())
@@ -225,7 +225,7 @@ class OEBReader(object):
                             new.add(href)
                 elif item.media_type in OEB_STYLES:
                     try:
-                        urls = list(cssutils.getUrls(data))
+                        urls = list(css_parser.getUrls(data))
                     except:
                         urls = []
                     for url in urls:
diff --git a/src/calibre/ebooks/oeb/stylizer.py b/src/calibre/ebooks/oeb/stylizer.py
index 706a38240c..0a66340cd9 100644
--- a/src/calibre/ebooks/oeb/stylizer.py
+++ b/src/calibre/ebooks/oeb/stylizer.py
@@ -11,10 +11,10 @@ __copyright__ = '2008, Marshall T. Vandegrift <llasram@gmail.com>'
 import os, re, logging, copy, unicodedata
 from weakref import WeakKeyDictionary
 from xml.dom import SyntaxErr as CSSSyntaxError
-from cssutils.css import (CSSStyleRule, CSSPageRule, CSSFontFaceRule,
+from css_parser.css import (CSSStyleRule, CSSPageRule, CSSFontFaceRule,
         cssproperties)
-from cssutils import (profile as cssprofiles, parseString, parseStyle, log as
-        cssutils_log, CSSParser, profiles, replaceUrls)
+from css_parser import (profile as cssprofiles, parseString, parseStyle, log as
+        css_parser_log, CSSParser, profiles, replaceUrls)
 from calibre import force_unicode, as_unicode
 from calibre.ebooks import unit_convert
 from calibre.ebooks.oeb.base import XHTML, XHTML_NS, CSS_MIME, OEB_STYLES, xpath, urlnormalize
@@ -22,7 +22,7 @@ from calibre.ebooks.oeb.normalize_css import DEFAULTS, normalizers
 from css_selectors import Select, SelectorError, INAPPROPRIATE_PSEUDO_CLASSES
 from tinycss.media3 import CSSMedia3Parser
 
-cssutils_log.setLevel(logging.WARN)
+css_parser_log.setLevel(logging.WARN)
 
 _html_css_stylesheet = None
 
@@ -123,7 +123,7 @@ class Stylizer(object):
             stylesheets.append(parseString(base_css, validate=False))
         style_tags = xpath(tree, '//*[local-name()="style" or local-name()="link"]')
 
-        # Add cssutils parsing profiles from output_profile
+        # Add css_parser parsing profiles from output_profile
         for profile in self.opts.output_profile.extra_css_modules:
             cssprofiles.addProfile(profile['name'],
                                         profile['props'],
diff --git a/src/calibre/ebooks/oeb/transforms/embed_fonts.py b/src/calibre/ebooks/oeb/transforms/embed_fonts.py
index 0d9f05edbd..0810d39de7 100644
--- a/src/calibre/ebooks/oeb/transforms/embed_fonts.py
+++ b/src/calibre/ebooks/oeb/transforms/embed_fonts.py
@@ -9,7 +9,7 @@ __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 import logging
 from collections import defaultdict
 
-import cssutils
+import css_parser
 from lxml import etree
 
 from calibre import guess_type
@@ -97,7 +97,7 @@ class EmbedFonts(object):
         self.sheet_cache = {}
         self.find_style_rules()
         self.find_embedded_fonts()
-        self.parser = cssutils.CSSParser(loglevel=logging.CRITICAL, log=logging.getLogger('calibre.css'))
+        self.parser = css_parser.CSSParser(loglevel=logging.CRITICAL, log=logging.getLogger('calibre.css'))
         self.warned = set()
         self.warned2 = set()
         self.newly_embedded_fonts = set()
diff --git a/src/calibre/ebooks/oeb/transforms/filenames.py b/src/calibre/ebooks/oeb/transforms/filenames.py
index 5b76cd8678..d7c672c782 100644
--- a/src/calibre/ebooks/oeb/transforms/filenames.py
+++ b/src/calibre/ebooks/oeb/transforms/filenames.py
@@ -25,7 +25,7 @@ class RenameFiles(object):  # {{{
         self.renamed_items_map = renamed_items_map
 
     def __call__(self, oeb, opts):
-        import cssutils
+        import css_parser
         self.log = oeb.logger
         self.opts = opts
         self.oeb = oeb
@@ -35,7 +35,7 @@ class RenameFiles(object):  # {{{
             if etree.iselement(item.data):
                 rewrite_links(self.current_item.data, self.url_replacer)
             elif hasattr(item.data, 'cssText'):
-                cssutils.replaceUrls(item.data, self.url_replacer)
+                css_parser.replaceUrls(item.data, self.url_replacer)
 
         if self.oeb.guide:
             for ref in self.oeb.guide.values():
@@ -184,4 +184,3 @@ class FlatFilenames(object):  # {{{
             renamer = RenameFiles(self.rename_map, self.renamed_items_map)
             renamer(oeb, opts)
 # }}}
-
diff --git a/src/calibre/ebooks/oeb/transforms/flatcss.py b/src/calibre/ebooks/oeb/transforms/flatcss.py
index 667a1dabdd..d144971af4 100644
--- a/src/calibre/ebooks/oeb/transforms/flatcss.py
+++ b/src/calibre/ebooks/oeb/transforms/flatcss.py
@@ -11,8 +11,8 @@ from collections import defaultdict
 from xml.dom import SyntaxErr
 
 from lxml import etree
-import cssutils
-from cssutils.css import Property
+import css_parser
+from css_parser.css import Property
 
 from calibre import guess_type
 from calibre.ebooks import unit_convert
@@ -139,7 +139,7 @@ class EmbedFontsCSSRules(object):
             iid, href = oeb.manifest.generate(u'page_styles', u'page_styles.css')
             rules = [x.cssText for x in self.rules]
             rules = u'\n\n'.join(rules)
-            sheet = cssutils.parseString(rules, validate=False)
+            sheet = css_parser.parseString(rules, validate=False)
             self.href = oeb.manifest.add(iid, href, guess_type(href)[0],
                     data=sheet).href
         return self.href
@@ -203,7 +203,7 @@ class CSSFlattener(object):
             # Make all links to resources absolute, as these sheets will be
             # consolidated into a single stylesheet at the root of the document
             if item.media_type in OEB_STYLES:
-                cssutils.replaceUrls(item.data, item.abshref,
+                css_parser.replaceUrls(item.data, item.abshref,
                         ignoreImportRules=True)
 
         self.body_font_family, self.embed_font_rules = self.get_embed_font_info(
@@ -278,7 +278,7 @@ class CSSFlattener(object):
                     cfont[k] = font[k]
             rule = '@font-face { %s }'%('; '.join(u'%s:%s'%(k, v) for k, v in
                 cfont.iteritems()))
-            rule = cssutils.parseString(rule)
+            rule = css_parser.parseString(rule)
             efi.append(rule)
 
         return body_font_family, efi
@@ -615,7 +615,7 @@ class CSSFlattener(object):
             if item.media_type in OEB_STYLES:
                 manifest.remove(item)
         id, href = manifest.generate('css', 'stylesheet.css')
-        sheet = cssutils.parseString(css, validate=False)
+        sheet = css_parser.parseString(css, validate=False)
         if self.transform_css_rules:
             from calibre.ebooks.css_transform_rules import transform_sheet
             transform_sheet(self.transform_css_rules, sheet)
@@ -647,7 +647,7 @@ class CSSFlattener(object):
             href = None
             if css.strip():
                 id_, href = manifest.generate('page_css', 'page_styles.css')
-                sheet = cssutils.parseString(css, validate=False)
+                sheet = css_parser.parseString(css, validate=False)
                 if self.transform_css_rules:
                     from calibre.ebooks.css_transform_rules import transform_sheet
                     transform_sheet(self.transform_css_rules, sheet)
diff --git a/src/calibre/ebooks/oeb/transforms/page_margin.py b/src/calibre/ebooks/oeb/transforms/page_margin.py
index b4cea39543..264f86d68d 100644
--- a/src/calibre/ebooks/oeb/transforms/page_margin.py
+++ b/src/calibre/ebooks/oeb/transforms/page_margin.py
@@ -65,7 +65,7 @@ class RemoveFakeMargins(object):
 
         stylesheet = stylesheet.data
 
-        from cssutils.css import CSSRule
+        from css_parser.css import CSSRule
         for rule in stylesheet.cssRules.rulesOfType(CSSRule.STYLE_RULE):
             self.selector_map[rule.selectorList.selectorText] = rule.style
 
diff --git a/src/calibre/ebooks/oeb/transforms/trimmanifest.py b/src/calibre/ebooks/oeb/transforms/trimmanifest.py
index 9f638e97ec..c1b71f0951 100644
--- a/src/calibre/ebooks/oeb/transforms/trimmanifest.py
+++ b/src/calibre/ebooks/oeb/transforms/trimmanifest.py
@@ -23,7 +23,7 @@ class ManifestTrimmer(object):
         return cls()
 
     def __call__(self, oeb, context):
-        import cssutils
+        import css_parser
         oeb.logger.info('Trimming unused files from manifest...')
         self.opts = context
         used = set()
@@ -60,7 +60,7 @@ class ManifestTrimmer(object):
                             if found not in used:
                                 new.add(found)
                 elif item.media_type == CSS_MIME:
-                    for href in cssutils.getUrls(item.data):
+                    for href in css_parser.getUrls(item.data):
                         href = item.abshref(urlnormalize(href))
                         if href in oeb.manifest.hrefs:
                             found = oeb.manifest.hrefs[href]
diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 0dcb09d8b9..6651552ad5 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -26,7 +26,7 @@ from calibre.ebooks.oeb.polish.pretty import fix_all_html, pretty_all
 from calibre.ebooks.oeb.polish.replace import rename_files, replace_file, get_recommended_folders, rationalize_folders
 from calibre.ebooks.oeb.polish.split import split, merge, AbortError, multisplit
 from calibre.ebooks.oeb.polish.toc import remove_names_from_toc, create_inline_toc
-from calibre.ebooks.oeb.polish.utils import link_stylesheets, setup_cssutils_serialization as scs
+from calibre.ebooks.oeb.polish.utils import link_stylesheets, setup_css_parser_serialization as scs
 from calibre.gui2 import error_dialog, choose_files, question_dialog, info_dialog, choose_save_file, open_url, choose_dir, add_to_recent_docs
 from calibre.gui2.dialogs.confirm_delete import confirm
 from calibre.gui2.tweak_book import (
@@ -61,7 +61,7 @@ def get_container(*args, **kwargs):
     return container
 
 
-def setup_cssutils_serialization():
+def setup_css_parser_serialization():
     scs(tprefs['editor_tab_stop_width'])
 
 
@@ -91,7 +91,7 @@ class Boss(QObject):
         self.save_manager.check_for_completion.connect(self.check_terminal_save)
         self.doing_terminal_save = False
         self.ignore_preview_to_editor_sync = False
-        setup_cssutils_serialization()
+        setup_css_parser_serialization()
         get_boss.boss = self
         self.gui = parent
         completion_worker().result_callback = self.handle_completion_result_signal.emit
@@ -172,7 +172,7 @@ class Boss(QObject):
                         bar.setIconSize(QSize(tprefs['toolbar_icon_size'], tprefs['toolbar_icon_size']))
 
         if ret == p.Accepted:
-            setup_cssutils_serialization()
+            setup_css_parser_serialization()
             self.gui.apply_settings()
             self.refresh_file_list()
         if ret == p.Accepted or p.dictionaries_changed:
diff --git a/src/calibre/gui2/tweak_book/diff/view.py b/src/calibre/gui2/tweak_book/diff/view.py
index c5c75ade92..8726efee39 100644
--- a/src/calibre/gui2/tweak_book/diff/view.py
+++ b/src/calibre/gui2/tweak_book/diff/view.py
@@ -53,9 +53,9 @@ def beautify_text(raw, syntax):
     elif syntax == 'css':
         import logging
         from calibre.ebooks.oeb.base import serialize, _css_logger
-        from calibre.ebooks.oeb.polish.utils import setup_cssutils_serialization
-        from cssutils import CSSParser, log
-        setup_cssutils_serialization(tprefs['editor_tab_stop_width'])
+        from calibre.ebooks.oeb.polish.utils import setup_css_parser_serialization
+        from css_parser import CSSParser, log
+        setup_css_parser_serialization(tprefs['editor_tab_stop_width'])
         log.setLevel(logging.WARN)
         log.raiseExceptions = False
         parser = CSSParser(loglevel=logging.WARNING,
diff --git a/src/calibre/gui2/tweak_book/editor/smarts/html.py b/src/calibre/gui2/tweak_book/editor/smarts/html.py
index 1f32354002..d44704f09e 100644
--- a/src/calibre/gui2/tweak_book/editor/smarts/html.py
+++ b/src/calibre/gui2/tweak_book/editor/smarts/html.py
@@ -10,7 +10,7 @@ import sys, re
 from operator import itemgetter
 from itertools import chain
 
-from cssutils import parseStyle
+from css_parser import parseStyle
 from PyQt5.Qt import QTextEdit, Qt, QTextCursor
 
 from calibre import prepare_string_for_xml, xml_entity_to_unicode
diff --git a/src/calibre/srv/render_book.py b/src/calibre/srv/render_book.py
index 74300176d0..eca906937c 100644
--- a/src/calibre/srv/render_book.py
+++ b/src/calibre/srv/render_book.py
@@ -13,8 +13,8 @@ from polyglot.builtins import map
 from urlparse import urlparse
 from urllib import quote
 
-from cssutils import replaceUrls
-from cssutils.css import CSSRule
+from css_parser import replaceUrls
+from css_parser.css import CSSRule
 
 from calibre import prepare_string_for_xml, force_unicode
 from calibre.ebooks import parse_css_length
diff --git a/src/tinycss/fonts3.py b/src/tinycss/fonts3.py
index 87f7602664..35fb97323f 100644
--- a/src/tinycss/fonts3.py
+++ b/src/tinycss/fonts3.py
@@ -50,7 +50,7 @@ def serialize_single_font_family(x):
             xl = 'sans-serif'
         return xl
     if SIMPLE_NAME_PAT.match(x) is not None and not x.lower().startswith('and'):
-        # cssutils dies if a font name starts with and
+        # css_parser dies if a font name starts with and
         return x
     return '"%s"' % x.replace('"', r'\"')
 
@@ -58,6 +58,7 @@ def serialize_single_font_family(x):
 def serialize_font_family(families):
     return ', '.join(map(serialize_single_font_family, families))
 
+
 GLOBAL_IDENTS = frozenset('inherit initial unset normal'.split())
 STYLE_IDENTS = frozenset('italic oblique'.split())
 VARIANT_IDENTS = frozenset(('small-caps',))