Start invitation; notification; add profile avatar in me

frontend/static/css/index.css

@@ -7,11 +7,30 @@
 body {
 }
 
-#app #avatar
-{
+#app #avatar {
 	max-height: 10em;
 	max-width: 10em;
 	min-height: 6em;
 	min-width: 6em;
 }
 
+
+#popup {
+	position: fixed;
+	font-size: 1.2em;
+	z-index: 1; /* foreground */
+
+	top:calc(1% + 0.1em);
+	left:50%;
+	transform: translate(-50%, 50%);
+
+	border: 1em	solid #1a1a1a;
+	color: #1a1a1a;
+	background-color: #cccccc;
+
+	padding: 5px;
+	border-width: 0.1em;
+
+	opacity: 0;
+	transition: opacity 0.25s; 
+}