Update index.html

index.html

@@ -180,6 +180,13 @@
     text-align: center;
     font-weight: bold;
     color: #EEFF41;
+}
+      @media (min-width: 992px) {
+    .slide1, .slide2, .slide3 {
+        height: 600px;
+        background-size: contain;
+        background-position: center;
+    }
 }
     </style>
 </head>