diff --git a/src/index.html b/src/index.html
index 688fda628..faccdb503 100644
--- a/src/index.html
+++ b/src/index.html
@@ -7,8 +7,63 @@
 
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="icon" type="image/png" href="favicon-96x96.png" sizes="96x96">
+
+  <style>
+    .loading {
+      position: absolute;
+      top: 50%;
+      left: 50%;
+    }
+
+    .loading-bar {
+      display: inline-block;
+      width: 4px;
+      height: 18px;
+      border-radius: 4px;
+      animation: loading 1s ease-in-out infinite;
+    }
+
+    .loading-bar:nth-child(1) {
+      background-color: #3498db;
+      animation-delay: 0;
+    }
+
+    .loading-bar:nth-child(2) {
+      background-color: #c0392b;
+      animation-delay: 0.09s;
+    }
+
+    .loading-bar:nth-child(3) {
+      background-color: #f1c40f;
+      animation-delay: .18s;
+    }
+
+    .loading-bar:nth-child(4) {
+      background-color: #27ae60;
+      animation-delay: .27s;
+    }
+
+    @keyframes loading {
+      0% {
+        transform: scale(1);
+      }
+      20% {
+        transform: scale(1, 2.2);
+      }
+      40% {
+        transform: scale(1);
+      }
+    }
+  </style>
 </head>
 <body>
-  <app-root></app-root>
+  <app-root>
+    <div class="loading">
+        <div class="loading-bar"></div>
+        <div class="loading-bar"></div>
+        <div class="loading-bar"></div>
+        <div class="loading-bar"></div>
+    </div>
+  </app-root>
 </body>
 </html>
