.go_top{ position:fixed;bottom:-15px;  font-size:100px;}
.go_top a{text-decoration:none; }
/*.go_top img{opacity:.7;transition: .3s;}*/
.go_top a img:hover{animation:go-top-kapakapi 1s;}

@keyframes go-top-kapakapi {
  0% {
    -webkit-transform: scale(1);
    -ms-transform: scale(1);
    transform: scale(1);
  }


  30% {
    transform: scaleX(1.25) scaleY(0.75);
  }

  40% {
    transform: scaleX(0.75) scaleY(1.25);
  }

  60% {
    transform: scaleX(.50) scaleY(1.50);
  }

  100% {
    transform: scale(1);
  }
}