Merge pull request #21493 from Simek/ui-cms-md-anchors-fix

ui(lib): Markdown header anchor links fix

Author: ornicar

ui/lib/css/component/_markdown.scss

@@ -87,16 +87,23 @@
   h2,
   h3,
   h4 {
+    position: relative;
+
     a[id] {
       opacity: 0;
+      width: 3rem;
+      left: -2.5rem;
+      position: absolute;
 
       &::before {
         @include icon-mask($icon-Link);
 
         color: $c-font-dimmer;
-        margin-left: -3rem;
-        width: 3rem;
-        position: absolute;
+        width: 1.75rem;
+
+        &:hover {
+          opacity: 0.8;
+        }
       }
     }