Add browser support tests

public/src/css/loader.css

@@ -28,4 +28,64 @@
 	font-family: sans-serif;
 	font-size: 5vmin;
 	color: white;
-}
+}
+
+#unsupportedBrowser{
+	position: absolute;
+	top: 0;
+	right: 0;
+	left: 0;
+	max-height: 100%;
+	overflow: hidden auto;
+	padding: 10px;
+	background: #aef;
+	font-family: sans-serif;
+	font-size: 20px;
+	z-index: 10;
+}
+#unsupportedBrowser::before{
+	content: "!";
+	display: inline-block;
+	width: 30px;
+	height: 30px;
+	margin-right: 10px;
+	background: #39a;
+	color: #fff;
+	text-align: center;
+	line-height: 30px;
+}
+#unsupportedBrowser.hidden{
+	width: 30px;
+}
+#unsupportedBrowser.hidden *{
+	display: none !important;
+}
+#unsupportedBrowser a{
+	color: #02e;
+	cursor: pointer;
+	text-decoration: none;
+}
+#unsupportedBrowser a:hover{
+	text-decoration: underline;
+}
+#unsupportedBrowser ul{
+	margin: 5px;
+}
+#unsupportedDetails{
+	display: none;
+	margin: 10px 50px 0 50px;
+	border: 3px solid #39a;
+	padding: 5px;
+	user-select: text;
+}
+#unsupportedHide{
+	position: absolute;
+	right: 0;
+	top: 0;
+	width: 50px;
+	height: 50px;
+	text-align: center;
+	line-height: 45px;
+	color: #777;
+	text-shadow: 1px 1px #fff;
+}