Update index.html

index.html

@@ -10,7 +10,8 @@
 
   body {
     font-family: 'Tajawal', sans-serif;
-    background: #0f0f1a;
+    background: linear-gradient(135deg, #000000 0%, #0d0a2e 50%, #1a0a3e 100%);
+    min-height: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;