Style onboarding image with more space & light border

services/web/public/stylesheets/app/editor/feature-onboarding.less

@@ -108,6 +108,11 @@ a.feat-onboard-dismiss {
 		top: 17px !important;
 	}
 
+	img {
+		margin-bottom: 10px;
+		border: 1px solid @gray-lighter;
+	}
+
 	&.right > .arrow {
 		left: -10px !important;