.logo{

    width:20px;

    height: 20px;

    background: red;

    -webkit-animation:haha1 .8s linear infinite;

　　animation:haha1 .8s linear infinite;

} @-webkit-keyframes haha1{ 0%{-webkit-transform:rotate(0deg);} 25%{-webkit-transform:rotate(90deg);} 50%{-webkit-transform:rotate(180deg);} 75%{-webkit-transform:rotate(270deg);} 100%{-webkit-transform:rotate(360deg);} }

.logo{

    width:20px;

    height: 20px;

    background: red;

    -webkit-animation:haha1 .8s linear infinite;

　　animation:haha1 .8s linear infinite;

} @-webkit-keyframes haha1{ from{transform:rotate(0)} to{transform:rotate(360deg)} }