课程

/前端开发

/CSS3

/css3实现网页平滑过渡效果

[data-icon]:after{
    content:attr(data-icon);
    width:260px;
    height:260px;
    background-color:#ddd;
    color:#fff;
    font-size:90px;
    text-align:center;
    line-height:260px;
    position:absolute;
    left:50%;
    top:50%;
}