Fix conflicting CSS rules to completely hide sidebar

custom.css

@@ -1,15 +1,21 @@
 /* Custom styling for IT Learning Notes */
 
-/* Hide the sidebar/TOC completely */
+/* IMPORTANT: Hide the sidebar/TOC completely */
+html body .sidebar,
 .sidebar {
     display: none !important;
+    width: 0 !important;
+    visibility: hidden !important;
 }
 
 /* Make content take up full width without sidebar */
+html body .content-wrap,
 .content-wrap {
     margin-left: 0 !important;
+    margin-right: 0 !important;
     max-width: 100% !important;
     padding: 0 30px !important;
+    left: 0 !important;
 }
 
 /* Right/left navigation buttons */
@@ -143,7 +149,6 @@ th {
 /* Ensure chapters don't disappear */
 .chapter {
     display: block !important;
-    visibility: visible !important;
 }
 
 /* Ensure main menu button is visible */