diff --git a/index.html b/index.html
index 31db349f..c38e25c1 100644
--- a/index.html
+++ b/index.html
@@ -82,6 +82,49 @@
                 font-size: 24px;
                 margin-top: 20px;
             }
+            #browser-upgrade {
+                position: absolute;
+                z-index: 10001;
+                top: 0;
+                left: 0;
+                height: 100%;
+                width: 100%;
+                display: none;
+                user-select: none;
+                color: #736477;
+                background-color: snow;
+            }
+            #browser-upgrade .title {
+                margin: 40px 0;
+                text-align: center;
+                font-size: 24px;
+            }
+            #browser-upgrade .browsers {
+                text-align: center;
+            }
+            #browser-upgrade .browsers .browser {
+                display: inline-block;
+                margin: 0 20px;
+                cursor: pointer;
+                text-decoration: none;
+            }
+            #browser-upgrade .browsers .browser .browser-icon {
+                display: block;
+                width: 50px;
+                height: 50px;
+                margin: 0 auto;
+                border: none;
+            }
+            #browser-upgrade .browsers .browser .browser-name {
+                text-align: center;
+                margin-top: 10px;
+                padding-bottom: 2px;
+                color: #736477;
+                border-bottom: 1px solid transparent;
+            }
+            #browser-upgrade .browsers .browser:hover .browser-name {
+                border-bottom: 1px solid #736477;
+            }
         </style>
         <%- copyrightScript %>
     </head>