diff --git a/CHANGELOG b/CHANGELOG
index b6c0443..486e594 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -32,4 +32,5 @@ Feb 6, 2023 · removed background color of alternating table rows, since distrac
 Feb 28, 2023 · added "auto" to THEMES list
 Mar 1, 2023 · added dark theme and auto theme to mitigate current and any future issues with Dark Reader
 May 3, 2023 · `THEME_COLOR_META_TAG = none` no longer required, as of Gitea 1.19.2
-Jun 4, 2023 · remove highlight behind some codes that obscured them
\ No newline at end of file
+Jun 4, 2023 · remove highlight behind some codes that obscured them
+Jun 5, 2023 · hide center border more between table header columns, and remove tiny empty spaces between table header corner and table border
\ No newline at end of file
diff --git a/public/css/theme-arc-red.css b/public/css/theme-arc-red.css
index f5ac7a4..9e19b1e 100644
--- a/public/css/theme-arc-red.css
+++ b/public/css/theme-arc-red.css
@@ -281,4 +281,16 @@ details {
 
 .added-code {
     background: unset !important; /* remove highlight behind some codes */
+}
+
+.ui.table>thead>tr>th {
+    border-inline: 1px solid var(--color-box-header) !important; /* hide center border more between table header columns */
+}
+
+.ui.table>thead>tr:first-child>th:first-child {
+    border-radius: .22rem 0 0 !important; /* remove tiny empty space between table header corner and table border */
+}
+
+.ui.table>thead>tr:first-child>th:last-child {
+    border-radius: 0 .22rem 0 0 !important; /* remove tiny empty space between table header corner and table border */
 }
\ No newline at end of file
diff --git a/public/css/theme-auto-red.css b/public/css/theme-auto-red.css
index 088ef7c..8e0b566 100644
--- a/public/css/theme-auto-red.css
+++ b/public/css/theme-auto-red.css
@@ -390,4 +390,16 @@
     .added-code {
         background: unset !important; /* remove highlight behind some codes */
     }
+
+    .ui.table>thead>tr>th {
+        border-inline: 1px solid var(--color-box-header) !important; /* hide center border more between table header columns */
+    }
+
+    .ui.table>thead>tr:first-child>th:first-child {
+        border-radius: .22rem 0 0 !important; /* remove tiny empty space between table header corner and table border */
+    }
+    
+    .ui.table>thead>tr:first-child>th:last-child {
+        border-radius: 0 .22rem 0 0 !important; /* remove tiny empty space between table header corner and table border */
+    }
 }
\ No newline at end of file