CSS实现从上到下扫描效果

【CSS实现从上到下扫描效果】css代码如下

.scan { position: absolute; top: 0; left: 0; width: 100%; border-bottom: 3px solid #3e88f1; -webkit-animation: scan 1.2s infinite; -moz-animation: scan 1.2s infinite; animation: scan 1.2s infinite; background: -webkit-gradient(linear, left top, left bottom, from(transparent), to(#3e88f1)); background: -webkit-linear-gradient(top, transparent, #3e88f1); background: -moz-linear-gradient(top, transparent, #3e88f1); background: linear-gradient(180deg, transparent, #3e88f1); }

效果如下

    推荐阅读