给大家分享一个用CSS 3.0的混合模式实现的特效，不用给文字设置多种颜色，滚动页面时，能够让文字能够根据背景颜色自动发生改变，效果如下：
以下是代码实现，欢迎大家复制粘贴和收藏。
<!DOCTYPE html>标签：妙用,3.0,source,wrapper,padding,mix,background,CSS,before From： https://blog.51cto.com/u_15959833/6046802
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>CSS 3.0中的混合模式的妙用</title>
<style>
* {
margin: 0;
padding:0;
}
.content,
.wrapper:before {
box-sizing: border-box;
display: block;
font-size: 4em;
padding: 1em;
width: 6em;
height: 3em;
position: fixed;
top: 50%;
left: 50%;
transform: translate3d(-50%, -50%, 0);
}
.content {
font-weight: bold;
text-align: center;
z-index: 1000;
background: #fff;
color: #000;
mix-blend-mode: lighten;
padding: 0.6rem;
}
section {
background-repeat: no-repeat;
background-size: cover;
isolation: isolate;
position: relative;
height: 100vh;
padding: 1em;
}
.wrapper {
clip: rect(auto auto auto auto);
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
}
.wrapper:before {
content: " ";
padding: 2em 3.5em;
mix-blend-mode: darken;
}
.one {
background-image: url(https://source.unsplash.com/1920x1080?city);
}
.one .wrapper:before {
background: red;
}
.two {
background-image: url(https://source.unsplash.com/1920x1080?landscape);
}
.two .wrapper:before {
background: #faaa54;
mix-blend-mode: difference;
}
.three {
background-image: url(https://source.unsplash.com/1920x1080?portrait);
}
.three .wrapper:before {
background: #6c320a;
mix-blend-mode: screen;
}
.four {
background-image: url(https://source.unsplash.com/1920x1080?stars);
}
.four .wrapper:before {
background: #e4135d;
}
</style>
</head>
<body>
<div class="content">文字颜色自适应背景</div>
<section class="one">
<div class="wrapper"></div>
</section>
<section class="two">
<div class="wrapper"></div>
</section>
<section class="three">
<div class="wrapper"></div>
</section>
<section class="four">
<div class="wrapper"></div>
</section>
</body>
</html>