diff --git a/src/calibre/trac/plugins/templates/linux.html b/src/calibre/trac/plugins/templates/linux.html
index 6e6924615a..faede164d0 100644
--- a/src/calibre/trac/plugins/templates/linux.html
+++ b/src/calibre/trac/plugins/templates/linux.html
@@ -10,6 +10,9 @@
     <style type="text/css">
         th.distro_type { 
             font-family: monospace;
+            font-weight: bold;
+            font-size: larger;
+            vertical-align:middle;
             text-align: center;
             border-bottom: solid 1pt black;
          }