group action icons by type

Signed-off-by: Arthur Lu <learthurgo@gmail.com>

index.html

@@ -16,6 +16,8 @@
 				<button id="logout">LOGOUT</button>
 			</nav>
 		</header>
-		<main><div id="instance-container" class="center-div"></div></main>
+		<main>
+			<div id="instance-container" class="center-div"></div>
+		</main>
 	</body>
 </html>