.loader3 {
  font-size: 8px;
  width: 1em;
  height: 1em;
  border-radius: 50%; 
  text-indent: -9999em;
  -webkit-animation: load4 1.3s infinite linear;
  animation: load4 1.3s infinite linear;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
    position: absolute;
    top:50%;
    left:50%;
    margin-left:-0.5em;
    margin-top:-0.5em
    
}