小编给大家分享一下css如何实现缕空遮罩层,希望大家阅读完这篇文章之后都有所收获,下面让我们一起去探讨吧!
常规遮罩层
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> <title>Title</title> <style> .mask{ position: absolute; width: 100%; height: 100%; top: 0; left: 0; background: rgba(0,0,0,0.4); display: flex; justify-content: center; align-items: center; z-index: 3; } .mask{ position:fixed; top : 0; left : 0; bottom : 0; right : 0; background:rgba(0,0,0,.5); } //模糊效果 毛玻璃效果 .blur{ -webkit-filter: blur(5px); -moz-filter: blur(5px); -ms-filter: blur(5px); filter: blur(5px); }</style></head><style></style><body><div class='mask'></div></body></html>
镂空遮罩层效果如图
使用box-shadow实现镂空遮罩引导层效果
优点:
圆角轻松实现;
box-shadow 不会影响元素位置,定位只需要根据 content 的位置写。
缺点:阴影可视区域无法触发click事件,因此,当点击蒙层任意区域,无法隐藏。
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> <title>Title</title> <style> .guide{ position: absolute; z-index: 2; top: 0px; left: 50%; transform: translateX(-50%); width: 50px; height: 50px; border-radius: 50px; border: 3px solid #2353FA; box-shadow: 0px 0px 0px 1000px rgba(0,0,0,.75); box-sizing: border-box; } </style></head><style></style><body><div class='guide'></div></body></html>
使用border实现镂空遮罩引导层效果
缺点:代码量大
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"> <title>Title</title> <style> .guide{ position: absolute; z-index: 2; .opacityEle{ border: 700px solid rgba(0,0,0,0.75); width: 50px; height: 50px; position: relative; top: -700px; left: -538px; border-radius: 50%; .ele{ width: 50px; height: 50px; border: 3px solid #0B6EFF; border-radius: 25px; box-sizing: border-box; } } } </style></head><style></style><body><div class='guide'> <div class='opacityEle'> <div class='ele'></div> </div></div></body></html>
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