How to create a button in css3.

it's very simple


HTML Tag is
<div class="button">
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</div>


Css is
.button{
    width:100px;
    height:30px;
    -moz-border-radius:5px;
    -webkit-border-radius:5px;
    border-radius:5px;
    background: -moz-linear-gradient(top, #89ae56 0%, #85a06d 100%);
    background: -webkit-linear-gradient(top, #89ae56 0%, #85a06d 100%);
    background: linear-gradient(top, #89ae56 0%, #85a06d 100%);
    position:relative;  
    color:#fff;  
    line-height:30px;
    padding-left:10px;   
}
.button:after{
    content:"+";
    position:absolute;
    width:20px;
    height:20px;
    background:#5f5f5f;
    -moz-border-radius:20px;
    -webkit-border-radius:20px;
    border-radius:20px;
    color:#fff;
    text-align:center;
    right:5px;
    top:5px;
    line-height:20px;
}