html, body, div, table, tr, td, th, h1, h2, h3, h4, h5, h6, ul, li, ol, p, span, a, img {
  margin:0;
  padding:0;
  border:none;
}
* { box-sizing:border-box; }

div.gifContainer
{
  width: 33.33%;
  height: auto;
  cursor: pointer;
  float: left;
  display: block;
  /*background-color: red;*/
  /*border: 1px solid blue;*/
}

video, img, .jsgif
{
  width: 100%;
}