@keyframes pound {
            to { -webkit-transform: scale(1.2);-moz-transform: scale(1.2);transform: scale(1.2); }
        }
        @-webkit-keyframes pound {
            to { -webkit-transform: scale(1.2);-moz-transform: scale(1.2);transform: scale(1.2); }
        }
@-moz-keyframes pound {
            to { -webkit-transform: scale(1.2);-moz-transform: scale(1.2);transform: scale(1.2); }
        }
.wrap-head{
  width: 300px;
  height: 100px;
line-height:100px;
}
.logo-head{
  display: inline-block;
  width: 80px;
  margin-top:11px;
  margin-right: 20px;
-webkit-animation: pound 0.5s infinite alternate;
-moz-animation: pound 0.5s infinite alternate;
  animation: pound 0.5s infinite alternate;
}