diff --git a/mkdocs.yml b/mkdocs.yml
index f68e2fd2f53..7dba7c18ee9 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -27,7 +27,7 @@ theme:
           name: Switch to light mode
     features:
       - navigation.top
-      - header.autohide  
+      # - header.autohide  
       - content.tabs.link
     language: 'en'
 
@@ -108,7 +108,6 @@ plugins:
       #render_js: true
       #headless_chrome_path: headless-chromium
       #enabled_if_env: ENABLE_PDF_EXPORT
-      #debug_html: true
       #show_anchors: true
       #verbose: true
 
diff --git a/overrides/partials/header.html b/overrides/partials/header.html
index adb60a1dc5d..bb21bf4e2d8 100644
--- a/overrides/partials/header.html
+++ b/overrides/partials/header.html
@@ -71,4 +71,53 @@
       </div>
     {% endif %}
   </nav>
+  <style>
+    /* customizable snowflake styling */
+    .snowflake {
+      color: #fff;
+      font-size: 1em;
+      font-family: Arial, sans-serif;
+      text-shadow: 0 0 5px #ccc;
+    }
+    
+    @-webkit-keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}@-webkit-keyframes snowflakes-shake{0%,100%{-webkit-transform:translateX(0);transform:translateX(0)}50%{-webkit-transform:translateX(80px);transform:translateX(80px)}}@keyframes snowflakes-fall{0%{top:-10%}100%{top:100%}}@keyframes snowflakes-shake{0%,100%{transform:translateX(0)}50%{transform:translateX(80px)}}.snowflake{position:fixed;top:-10%;z-index:9999;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:default;-webkit-animation-name:snowflakes-fall,snowflakes-shake;-webkit-animation-duration:10s,3s;-webkit-animation-timing-function:linear,ease-in-out;-webkit-animation-iteration-count:infinite,infinite;-webkit-animation-play-state:running,running;animation-name:snowflakes-fall,snowflakes-shake;animation-duration:10s,3s;animation-timing-function:linear,ease-in-out;animation-iteration-count:infinite,infinite;animation-play-state:running,running}.snowflake:nth-of-type(0){left:1%;-webkit-animation-delay:0s,0s;animation-delay:0s,0s}.snowflake:nth-of-type(1){left:10%;-webkit-animation-delay:1s,1s;animation-delay:1s,1s}.snowflake:nth-of-type(2){left:20%;-webkit-animation-delay:6s,.5s;animation-delay:6s,.5s}.snowflake:nth-of-type(3){left:30%;-webkit-animation-delay:4s,2s;animation-delay:4s,2s}.snowflake:nth-of-type(4){left:40%;-webkit-animation-delay:2s,2s;animation-delay:2s,2s}.snowflake:nth-of-type(5){left:50%;-webkit-animation-delay:8s,3s;animation-delay:8s,3s}.snowflake:nth-of-type(6){left:60%;-webkit-animation-delay:6s,2s;animation-delay:6s,2s}.snowflake:nth-of-type(7){left:70%;-webkit-animation-delay:2.5s,1s;animation-delay:2.5s,1s}.snowflake:nth-of-type(8){left:80%;-webkit-animation-delay:1s,0s;animation-delay:1s,0s}.snowflake:nth-of-type(9){left:90%;-webkit-animation-delay:3s,1.5s;animation-delay:3s,1.5s}.snowflake:nth-of-type(10){left:25%;-webkit-animation-delay:2s,0s;animation-delay:2s,0s}.snowflake:nth-of-type(11){left:65%;-webkit-animation-delay:4s,2.5s;animation-delay:4s,2.5s}
+    </style>
+    <div class="snowflakes" aria-hidden="true">
+      <div class="snowflake">
+      ❅
+      </div>
+      <div class="snowflake">
+      ❆
+      </div>
+      <div class="snowflake">
+      ❅
+      </div>
+      <div class="snowflake">
+      ❆
+      </div>
+      <div class="snowflake">
+      ❅
+      </div>
+      <div class="snowflake">
+      ❆
+      </div>
+      <div class="snowflake">
+        ❅
+      </div>
+      <div class="snowflake">
+        ❆
+      </div>
+      <div class="snowflake">
+        ❅
+      </div>
+      <div class="snowflake">
+        ❆
+      </div>
+      <div class="snowflake">
+        ❅
+      </div>
+      <div class="snowflake">
+        ❆
+      </div>
+    </div>
 </header>