[data-title]:hover:after {
        opacity: 0.8;

        transition: all 0.1s ease 0.5s;
        visibility: visible;
      }
      [data-title]:after {
        position: absolute;
        bottom: -37px;
        left: -2px;
        display: inline-block;
        color: #fff;
        border-bottom: 2px solid #000;
        content: attr(data-title);
        padding: 4px 8px 4px 8px;
        color: #FFF;
        white-space: nowrap;
        -moz-border-radius: 5px;
        -webkit-border-radius: 5px;
        border-radius: 4px;
        -moz-box-shadow: 0px 0px 4px #666;
        -webkit-box-shadow: 0px 0px 4px #666;
        box-shadow: 0px 0px 4px #666;
        background-image: -moz-linear-gradient(top, #000000, #000000);
        background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0, #000000), color-stop(1, #000000));
        background-image: -webkit-linear-gradient(top, #000000, #000000);
        background-image: -moz-linear-gradient(top, #000000, #000000);
        background-image: -ms-linear-gradient(top, #000000, #000000);
        background-image: -o-linear-gradient(top, #000000, #000000);
        opacity: 0;
        z-index: 99999;
        visibility: hidden;
      }
      [data-title] {
        position: relative;
      }