fix small screen fit

public/less/_base.less

@@ -212,4 +212,10 @@ footer {
   margin: 0;
   overflow: visible;
   clip: auto;
+}
+
+@media only screen and (max-width: 991px) and (min-width: 768px) {
+	.ui.container {
+		width: 90%;
+	}
 }