span.similarDocs-image-container {
      display: inline-block;
      float: left;
      width: 45px;
      margin-right: 10px;
      height: 40px;
      background-size: cover;
      background-repeat: no-repeat;
      background-position: center center;
}
ul.similarDocs > li {
    overflow: hidden;
    margin-bottom: 10px;
    padding: 5px;
}
ul.similarDocs {
    padding: 0px;
    list-style: none;
}
ul.similarDocs > li > a {
display: block;
overflow: hidden;
}.img-video-overlay {
    position: relative;
    left: 0px;
    top: 0px;
}
.img-video-overlay > i {
    position: absolute;
    left: 5px;
    bottom: 5px;
    background: #383838;
    padding: 12px 17px;
    font-size: 1.4em;
    color: #F4F4F4;
    box-shadow: 0px 0px 4px 0px #000;
    z-index:2;
}
.img-video-overlay:hover > i {
    box-shadow: 0px 0px 4px 1px #000;
}