diff --git a/CLAUDE.md b/CLAUDE.md
index 7814e24..0dd9284 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -30,8 +30,8 @@ Mobile-first static site. CSS Grid. Helvetica. Media queries at 800px (tablet/de
 | Blue Secondary | `#98b6fa` | Secondary buttons (edit, preview, save, PyPi, blog), alert-info |
 | Navy Brand | `#5871ad` | Ribbon gradient start, log-out/activate buttons, corner ribbon |
 | Light Navy | `#82A8FF` | Ribbon gradient end |
-| Purple | `#9B59B6` | Source/code buttons (PyPi, Source Code), corner ribbon |
-| Purple Dark | `#7B2D8E` | Purple hover state, ribbon gradient |
+| Purple | `#9B59B6` | Source/code buttons (PyPi, Source Code) |
+| Purple Dark | `#7B2D8E` | Purple hover state |
 | Danger Red | `#CC6958` | Delete button |
 | Check Green | `#678731` | Checkmark list items |
 | Cross Red | `#c77765` | Cross list items |
@@ -62,7 +62,6 @@ Green = primary CTA (action the user should take). Blue = secondary (information
 
 ### Components
 
-- **Corner ribbon** — `.corner-ribbon` fixed top-right, navy, links to source repo
 - **Message ribbon** — `.message-ribbon` gradient banner, hidden on mobile
 - **Wells** — `.well` (gray bg) and `.well.well-white` (white bg), rounded corners
 - **Alerts** — `.alert.alert-success`, `.alert.alert-info`, `.alert.alert-warning`, `.alert.alert-danger`
diff --git a/common.css b/common.css
index 118f57c..d9bef26 100644
--- a/common.css
+++ b/common.css
@@ -784,68 +784,6 @@ textarea.markup-editor-textarea {
     color: #a3c765;
 }
 
-/* ============================================
-   CORNER RIBBON
-   ============================================ */
-
-@keyframes ribbon-glow {
-    0%   { box-shadow: 0 3px 10px rgba(163, 199, 101, 0.4),  0 0 20px rgba(163, 199, 101, 0.2),  0 0 40px rgba(163, 199, 101, 0.1); }
-    50%  { box-shadow: 0 3px 16px rgba(163, 199, 101, 0.7),  0 0 35px rgba(163, 199, 101, 0.4),  0 0 60px rgba(163, 199, 101, 0.15); }
-    100% { box-shadow: 0 3px 10px rgba(163, 199, 101, 0.4),  0 0 20px rgba(163, 199, 101, 0.2),  0 0 40px rgba(163, 199, 101, 0.1); }
-}
-
-@keyframes ribbon-glow-hover {
-    0%   { box-shadow: 0 3px 16px rgba(163, 199, 101, 0.8), 0 0 40px rgba(163, 199, 101, 0.5), 0 0 80px rgba(163, 199, 101, 0.2),  0 0 120px rgba(163, 199, 101, 0.1); }
-    50%  { box-shadow: 0 3px 24px rgba(163, 199, 101, 1.0), 0 0 60px rgba(163, 199, 101, 0.7), 0 0 100px rgba(163, 199, 101, 0.3), 0 0 140px rgba(163, 199, 101, 0.15); }
-    100% { box-shadow: 0 3px 16px rgba(163, 199, 101, 0.8), 0 0 40px rgba(163, 199, 101, 0.5), 0 0 80px rgba(163, 199, 101, 0.2),  0 0 120px rgba(163, 199, 101, 0.1); }
-}
-
-@keyframes ribbon-shimmer {
-    0%   { background-position: 200% center; }
-    100% { background-position: -200% center; }
-}
-
-.corner-ribbon {
-    position: fixed;
-    top: 0;
-    right: 0;
-    z-index: 99;
-    width: 200px;
-    height: 200px;
-    overflow: hidden;
-    pointer-events: none;
-}
-
-.corner-ribbon a {
-    display: block !important;
-    position: absolute !important;
-    right: -55px;
-    top: 30px;
-    width: 300px;
-    padding: 18px 0;
-    text-align: center;
-    font-size: 15px;
-    font-weight: bold !important;
-    white-space: nowrap !important;
-    color: #ffffff !important;
-    background: linear-gradient(135deg, #7B2D8E, #9B59B6, #7B2D8E) !important;
-    background-size: 200% auto !important;
-    text-decoration: none !important;
-    transform: rotate(45deg);
-    pointer-events: auto;
-    letter-spacing: 0.08em;
-    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 0 10px rgba(163, 199, 101, 0.4);
-    animation: ribbon-glow 2.5s ease-in-out infinite, ribbon-shimmer 4s linear infinite;
-    transition: all 300ms ease;
-}
-
-.corner-ribbon a:hover {
-    background: linear-gradient(135deg, #6A1B7A, #a3c765, #6A1B7A) !important;
-    background-size: 200% auto !important;
-    animation: ribbon-glow-hover 1.5s ease-in-out infinite, ribbon-shimmer 2s linear infinite;
-    transform: rotate(45deg) scale(1.08);
-    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 0 20px rgba(163, 199, 101, 0.8);
-}
 
 @media (min-width: 800px) {
     .mps-footer-grid {
diff --git a/index.html b/index.html
index 7c9101f..5052be1 100644
--- a/index.html
+++ b/index.html
@@ -18,9 +18,6 @@
 
 <body style="color: #515151; background-color: #F9F9FA;">
 
-<div class="corner-ribbon">
-  <a href="https://git.unturf.com/engineering/make-post-sell/make_post_sell" target="_blank">Contribute Code</a>
-</div>
 
 <div class="message-ribbon">
 Sell digital downloads or physical products &#8212; commission free!
diff --git a/styleguide.html b/styleguide.html
index b7ed9db..f8c251d 100644
--- a/styleguide.html
+++ b/styleguide.html
@@ -87,9 +87,6 @@
 
 <body style="color: #515151; background-color: #F9F9FA;">
 
-<div class="corner-ribbon">
-  <a href="https://git.unturf.com/engineering/make-post-sell/make_post_sell" target="_blank">Contribute Code</a>
-</div>
 
 <div class="message-ribbon">
 Style Guide &#8212; Make Post Sell Design System
@@ -359,21 +356,6 @@ Gradient: #5871ad &#8594; #82A8FF
 Hidden on mobile, visible at 800px+</div>
         </div>
 
-        <div class="sg-subsection">
-          <div class="sg-label">Corner Ribbon (fixed, top-right)</div>
-          <div class="sg-demo" style="position: relative; min-height: 200px; overflow: hidden;">
-            <div style="position: absolute; top: 0; right: 0; overflow: hidden; width: 185px; height: 185px;">
-              <a href="#" style="display: block; position: absolute; right: -45px; top: 40px; width: 250px; padding: 10px 0; text-align: center; font-size: 14px; font-weight: bold; color: #ffffff; background: linear-gradient(to right, #5871ad, #82A8FF); text-decoration: none; transform: rotate(45deg); box-shadow: 0 3px 6px rgba(0,0,0,0.25); letter-spacing: 0.03em;">Contribute Code</a>
-            </div>
-          </div>
-          <div class="sg-code">&lt;div class="corner-ribbon"&gt;
-  &lt;a href="https://git.unturf.com/..." target="_blank"&gt;Contribute Code&lt;/a&gt;
-&lt;/div&gt;
-
-Gradient: #5871ad &#8594; #82A8FF, hovers to green #a3c765
-Fixed position, z-index 99
-Uses !important to override inline page styles</div>
-        </div>
       </div>
 
       <!-- ======== WELLS ======== -->