css3 图标上下移动动画

@-webkit-keyframes bird{
     0% {
         -moz-transform: translate(0,0);
	     -webkit-transform: translate(0,0);
	     -o-transform: translate(0,0);
	     -ms-transform: translate(0, 0);
	     transform: translate(0,0);
     }

     25% {
         -moz-transform: translate(0,-10px);
	     -webkit-transform: translate(0,-10px);
	     -o-transform: translate(0,-10px);
	     -ms-transform: translate(0, -10px);
	     transform: translate(0,-10px);
     }
     50% {
         -moz-transform: translate(0,-20px);
	     -webkit-transform: translate(0,-20px);
	     -o-transform: translate(0,-20px);
	     -ms-transform: translate(0, -20px);
	     transform: translate(0,-20px);
     }

      75% {
         -moz-transform: translate(0,-10px);
	     -webkit-transform: translate(0,-10px);
	     -o-transform: translate(0,-10px);
	     -ms-transform: translate(0, -10px);
	     transform: translate(0,-10px);
     }

      100% {
         -moz-transform: translate(0,0);
	     -webkit-transform: translate(0,0);
	     -o-transform: translate(0,0);
	     -ms-transform: translate(0, 0);
	     transform: translate(0,0);
     }
}

　　

.qi:not(:target),.birds:not(:target),.hong:not(:target){
	-webkit-animation-name: bird;
	-webkit-animation-duration: 5s;
	-webkit-animation-timing-function: linear;
	-webkit-animation-iteration-count: infinite;
	-moz-animation-name: bird;
	-moz-animation-duration: 5s;
	-moz-animation-timing-function: linear;
	-moz-animation-iteration-count: infinite;
	-o-animation-name: bird;
	-o-animation-duration: 5s;
	-o-animation-timing-function: linear;
	-o-animation-iteration-count: infinite;
	-ms-animation-name: bird;
	-ms-animation-duration: 5s;
	-ms-animation-timing-function: linear;
	-ms-animation-iteration-count: infinite;
	animation-name: bird;
	animation-duration: 5s;
	animation-timing-function: linear;
	animation-iteration-count: infinite;
}