Merge pull request #331 from sharelatex/pr-ab-test-dropbox-teaser

AB test dropbox teaser

services/web/public/stylesheets/app/editor.less

@@ -400,4 +400,26 @@
 			background-color: @gray-lightest;
 		}
 	}
+}
+
+.dropbox-teaser-title {
+	margin-top: 0;
+	text-align: center;
+}
+
+.dropbox-teaser-img {
+	.img-responsive;
+	margin-bottom: 5px;
+}
+
+.dropbox-teaser-video-container {
+	margin-top: -@modal-inner-padding;
+	margin-left: -@modal-inner-padding;
+	margin-right: -@modal-inner-padding;
+	margin-bottom: 5px;
+	overflow: hidden;
+}
+.dropbox-teaser-video {
+	width: 100%;
+	height: auto;
 }