今天分享一个用纯CSS实现的3D按钮。
css巧妙利用了box-shadow来实现3D物体的立体感，当按钮按下的时候再去修改box-shadow和top值。
让人感觉有一种按钮被按下的感觉。css代码非常少，如下所示
a.css-3d-btn{
position: relative;
color: rgba(255, 255, 255, 1);
text-decoration: none;
background-color: rgba(219, 87, 51, 1);
font-family: "Microsoft YaHei", 微软雅黑, 宋体;
font-weight: 700;
font-size: 3em;
display: block;
padding: 4px;
border-radius: 8px;
/* let's use box shadows to make the button look more 3-dimensional */
box-shadow: 0px 9px 0px rgba(219, 31, 5, 1), 0px 9px 25px rgba(0, 0, 0, .7);
margin: 100px auto;
width: 160px;
text-align: center;
-webkit-transition: all .1s ease;
-moz-transition: all .1s ease;
transition: all .1s ease;
}
/* now if we make the box shadows smaller when the button is clicked, it'll look like the button has been "pushed" */
a.css-3d-btn:active{
box-shadow: 0px 3px 0px rgba(219, 31, 5, 1), 0px 3px 6px rgba(0, 0, 0, .9);
position: relative;
top: 6px;
}