diff --git a/assets/css/style.scss b/assets/css/style.scss
index 0d261f85..2029cc76 100644
--- a/assets/css/style.scss
+++ b/assets/css/style.scss
@@ -12,25 +12,6 @@
 ul.downloads,
 .downloads {
   display: none !important;
-  visibility: hidden !important;
-  height: 0 !important;
-  margin: 0 !important;
-  padding: 0 !important;
-  border: none !important;
-  background: transparent !important;
-}
-
-/* Remove borders between download list items (backup if shown) */
-.downloads li {
-  border: none !important;
-  border-right: none !important;
-  border-left: none !important;
-  border-top: none !important;
-  border-bottom: none !important;
-}
-
-.downloads a {
-  border: none !important;
 }
 
 /* Section - remove ALL borders in all states */
@@ -43,29 +24,9 @@ section {
   outline: none !important;
 }
 
-/* Header - remove bottom line that appears as "random line" */
-/* Note: box-shadow is intentionally NOT removed here to allow Issue #127 sticky header shadow */
+/* Header - hide entirely (content is duplicated from README) */
 header {
-  border: none !important;
-  border-bottom: none !important;
-  outline: none !important;
-}
-
-header ul {
-  border: none !important;
-  background: transparent !important;
-  box-shadow: none !important;
-}
-
-header li {
-  border: none !important;
-  border-right: none !important;
-}
-
-header p,
-header h1,
-header a {
-  border: none !important;
+  display: none !important;
 }
 
 /* Footer - remove top line and any borders around "Hosted on GitHub Pages" */
@@ -107,10 +68,6 @@ div.wrapper {
     border: none !important;
     border-width: 0 !important;
   }
-
-  header ul {
-    border: none !important;
-  }
 }
 
 @media print, screen and (max-width: 720px) {
diff --git a/assets/css/theme.css b/assets/css/theme.css
index 937c7ba2..f1cfe3f4 100644
--- a/assets/css/theme.css
+++ b/assets/css/theme.css
@@ -947,12 +947,6 @@ pre code {
     padding: 15px 10px !important;
     margin-top: 30px !important;
   }
-
-  /* Issue #127: Adjust scroll margin for smaller header on tablet */
-  h1, h2, h3, h4, h5, h6,
-  section h1, section h2, section h3, section h4, section h5, section h6 {
-    scroll-margin-top: 90px;
-  }
 }
 
 /* Mobile screens (320px - 480px) */
@@ -1037,12 +1031,6 @@ pre code {
     inset-inline-end: 6px !important;
     padding: 5px 8px !important;
   }
-
-  /* Issue #127: Adjust scroll margin for smaller header on mobile */
-  h1, h2, h3, h4, h5, h6,
-  section h1, section h2, section h3, section h4, section h5, section h6 {
-    scroll-margin-top: 80px;
-  }
 }
 
 /* Very small screens (below 320px) */
@@ -1080,7 +1068,6 @@ section img {
 }
 
 /* Improve heading spacing */
-/* Issue #127: scroll-margin-top ensures anchor links don't hide content under sticky header */
 section h1,
 section h2,
 section h3,
@@ -1089,7 +1076,6 @@ section h5,
 section h6 {
   margin-top: 1.5em !important;
   margin-bottom: 0.5em !important;
-  scroll-margin-top: 100px;
 }
 
 section h1:first-child,