Style Discourse embeds in the comments section

I noticed that Discourse embeds in the comments on the main website don’t really look good. It doesn’t look like an embed. I threw together some CSS to give it a little styling and make it stand out a bit more. But any styling to help it stand out will do, doesn’t have to be this.

.discourse-comments-area .comment-list .comment-content aside.onebox{
    padding: 1em;
    border: 1px solid #eee;
    border-radius: 2px;
    box-shadow: 0 0 5px -5px #000;

.discourse-comments-area .comment-list .comment-content aside.onebox h3{
    font-size: 1em;

This is before and after: