前段时间在开发中,遇到需要给背景层加颜色遮罩的项目,现在特定总结一下给背景图层加颜色遮罩的方法。
方法一: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;
}
方法二: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;
}
方法三: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;
}
拓展: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;
}
总结
以上所述是小编给大家介绍的css3给背景图片加颜色遮罩的方法,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对软件开发网网站的支持!
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