1.通过定位叠加(注意层级)
<div class="wrap1"> <div class="inner"> </div> </div> .wrap1 { position: relative; width: 1200px; height: 400px; background: rgba(0, 0, 0, .5); } .wrap1 .inner { position: absolute; left: 0; right: 0; top: 0; bottom: 0; background: url(ban8.jpg) no-repeat center center; background-size: cover; z-index: -1; }
2.通过伪类元素叠加
<div class="wrap2"></div> .wrap2 { position: relative; width: 1200px; height: 400px; background: url(ban8.jpg) no-repeat center center; background-size: cover; } .wrap2::before { content: ""; position: absolute; left: 0; right: 0; bottom: 0; top: 0; background-color: rgba(0, 0, 0, .5); z-index: 2; }
3.CSS3颜色叠加background-blend-mode:multiply;(正片叠底)
<div class="wrap3"></div> .wrap3 { position: relative; width: 1200px; height: 400px; background: url(ban8.jpg) rgba(0, 0, 0, .5) no-repeat center center; background-blend-mode: multiply; }
4.背景模糊加颜色叠加
.wrap4 { position: relative; width: 1200px; height: 400px; background: url(ban8.jpg) rgba(0, 0, 0, .5) no-repeat center center; background-blend-mode: multiply; filter: blur(2px); overflow: hidden; }