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有没有办法给 background-image 设置透明度？

 2 years ago
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有没有办法给 background-image 设置透明度？

时间: 12/17/2021作者: 一颗小草浏览量: 9

现在是没法改图片本身的透明度，该图片以 background-image 写在 css 里，不知道有没有办法给他设置透明度？

1. 方式一

div{
    position: relative;        
}
div:after{
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url(...);
    opacity: 0.5;
}

2. 方式二

只要把用到的 background 属性都写成一条就可以了，如下

background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('http://placehold.it/350x150') no-repeat 0% 20%/ cover;
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