New BG

assets/style.css

@@ -14,6 +14,14 @@ body {
   /*font-family: "Open Sans",sans-serif;*/
 }
 
+/* Main background */
+#custom-css .sub-header-container{
+  background-position: center top;
+  background-size: cover;
+  background-repeat: repeat;
+  background-attachment: fixed;
+}
+
 #custom-css #search-video{
   background: var(--mainBackgroundColor) !important;
 }

client/common-client-plugin.js

@@ -4,6 +4,7 @@ function register ({ registerHook, peertubeHelpers }) {
   const filterUrl = baseStaticUrl + '/images/filter_black.png';
   const keyboardUrl = baseStaticUrl + '/images/keyboard_black.png';
   const languagesUrl = baseStaticUrl + '/images/languages_black.png';
+  const backgroundUrl = baseStaticUrl + '/images/back_cube_lm.svg';
   const image404 = baseStaticUrl + '/images/404.svg'
   const style = document.createElement('style')
   document.head.appendChild(style)
@@ -24,6 +25,11 @@ function register ({ registerHook, peertubeHelpers }) {
       rule+= " background-image: url('"+ keyboardUrl +"'); -webkit-filter: none; filter: none"
       rule+= " } "
       sheet.insertRule(rule, 0)
+      // Change background 
+      rule = " #custom-css .sub-header-container{ "
+      rule+= " background-image: url('"+ backgroundUrl +"'); -webkit-filter: none; filter: none"
+      rule+= " } "
+      sheet.insertRule(rule, 0)
   // STYLES END
 
   /* ANGULAR NAVIGATION-END */