Update static/style.css

static/style.css

@@ -72,6 +72,15 @@ button:hover {
   text-align: center;
 }
 
+.color-overlay {
+            position: absolute;
+            top: 0;
+            left: 0;
+            right: 0;
+            bottom: 0;
+            animation: colorChange 4s infinite;
+            mix-blend-mode: overlay;
+        }
 /* Footer with wave-like pattern */
 footer {
   padding: 20px 0;