make background of .card opaque

launch.html

@@ -110,7 +110,9 @@
         box-sizing: border-box;
         width: min(600px, calc(100% - 32px));
         padding: 32px;
-        background: white;
+        background: rgba(255, 255, 255, 0.2);
+        -webkit-backdrop-filter: blur(7px);
+        backdrop-filter: blur(7px);
         border-radius: 14px;
         box-shadow: 0 2px 8px rgba(0, 0, 0, 0.30), 0 12px 40px rgba(0, 0, 0, 0.45);
         text-align: center;
@@ -248,7 +250,7 @@
       }
 
       :root.dark .card {
-        background: #242424;
+        background: rgba(36, 36, 36, 0.72);
       }
 
       :root.dark .lang-dropdown {