该效果的主要实现思路是给文字添加渐变的背景，然后对背景进行裁剪，按文字裁剪（目前只有webkit内核浏览器支持该属性），最后给背景添加动画，即改变背景的位置，背景动画效果如下（GIF录制时有卡顿，代码实现时不卡）：
最终效果：
全部代码如下：
<!DOCTYPE html><html><head> <style> p{ width:50%; margin:0 auto; line-height:50px; font-size:50px; text-align:center; -webkit-background-clip: text; /*按文字裁剪*/ -webkit-text-fill-color: transparent; /*文字的颜色使用背景色*/ background-color:#19385c; /*设置一个背景色*/ background-image: -webkit-linear-gradient(-45deg, rgba(0, 0, 0, 0.6) 30%, #aff0ff 50%, rgba(0, 0, 0, 0.6) 70%); /*设置渐变的背景，按对角线渐变*/ background-blend-mode: hard-light; /*设置背景为混合模式下的强光模式*/ background-size: 200%; -webkit-animation: shine 4s infinite; /*给背景添加动画改变位置*/ } @-webkit-keyframes shine { from {background-position: 100%;} to {background-position: 0;} } </style></head><body><p>> Slide To Unlock</p></body></html> 需要说明的是由于按文字裁剪目前只有 webkit 内核可用，所以该效果目前不兼容其他内核浏览器。
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