css样式：

.animate{
width:65px;
height:40px;
background:#92B901;
color:#ffffff;
position:absolute;
font-weight:bold;
font:12px ‘微软雅黑‘, Verdana, Arial, Helvetica, sans-serif;
padding:20px 10px 0px 10px;
display:blcok;
margin:5px;
-webkit-transition:-webkit-transform 1s,opacity 1s,background 1s,width 1s,height 1s,font-size 1s;
-webkit-border-radius:5px;
-o-transition-property:width,height,-o-transform,background,font-size,opacity;
-o-transition-duration:1s,1s,1s,1s,1s,1s;
-moz-transition-property:width,height,-o-transform,background,font-size,opacity;
-moz-transition-duration:1s,1s,1s,1s,1s,1s;
transition-property:width,height,transform,background,font-size,opacity;
transition-duration:1s,1s,1s,1s,1s,1s;
border-radius:5px;
opacity:0.4;
}

.animate:hover{
-moz-transform: rotate(360deg);
-webkit-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
opacity:1;
background:#1ec7e6;
width:90px;
height:60px;
font-size:16px;
}

html:

<a href="javascript:;" class="animate">鼠标移动到我这里</a>