纯css3写的相册效果.a ul li div{ display:none; position:absolute; left:20px; top:20px; transition:box-shadow 2s; } ul{float:right; width:400px; } ul li{ float:left; margin:5px; border:3px solid #FFF; opacity:0.3; border-radius:3px;/**边框圆***/ transition:opacity 2s; } .a ul li:hover div{ display:block; border:3px solid #FFF; box-shadow:3px 3px 10px #00CC00;/**背景阴影***/ } .a ul li:hover{ float:left; margin:5px; border:3px solid #FFF; opacity:1.0; }