html
{
    height: 100%;
}
body{
    min-height: 100%;
    margin: 0;
    padding: 0;

}

.bottomAnim{
    border: none;
    position: absolute; 
    bottom: 0; 
    left: 0;
    width: 100%; 
    height: 100%; 
    background: #2851A6 url("http://i.stack.imgur.com/spmUM.gif") left repeat-x;

    background-position: bottom;
    z-index: 1000;
  
}

@media (max-height: 700px) {
      .bottomAnim {
        background-size: auto 65%;
      }
    }