blocks/tag_youtube/styles.css

   1 .block_tag_youtube .youtube-thumb {
   2     padding: 3px;
   3     padding-bottom: 0.5em;
   4     display: block;
   5     float: left;
   6 }
   7
   8 .block_tag_youtube .yt-video-entry li {
   9     clear: left;
  10 }