helios: adds focus shadow around buttons

css/helios.css

@@ -735,6 +735,8 @@ html[xmlns] .clearfix {
 }
 #helios .button:focus {
   outline: 0;
+  border-color: #08C;
+  box-shadow: 0 0 5px #08C;
 }
 #helios .doc {
   background: white;

css/helios.less

@@ -841,6 +841,8 @@ html[xmlns] .clearfix {
 
 	.button:focus {
 		outline: 0;
+	    border-color: #08C;
+	    box-shadow: 0 0 5px #08C;
 	}
 
 	.doc {