本篇文章给大家带来了关于css的相关知识，其中主要介绍了我因为好奇，get了一个新的css知识，什么东西让我好奇呢？感兴趣的朋友，下面一起来看一下吧，可能你也会很好奇，哈哈。
大家在查阅Element UI文档的时候，是否发现下面这个效果
好家伙，这个效果该怎么实现呢？我的思路是设置背景图为白色和透明相间，这样底下的图片就能穿透部分上来，形成一个类似毛玻璃的效果。话不多说，咱们一起来写代码试试能否实现：
背景如何镂空
.header { position: fixed; top: 0; width: 100%; height: 400px; background-image: radial-gradient(transparent 50px, #fff 50px); background-size: 200px 200px; background-color: yellow;}
这边使用的是径向渐变的方式，给背景设置一个中间透明，四周白色的背景，可能以上代码并不能很好体现这个背景如何生效的，我们来看看下面这个：
立即学习“前端免费学习笔记（深入）”；
.header { position: fixed; top: 0; width: 100%; height: 400px; background-image: radial-gradient(transparent 50px, #fff 50px); background-size: 200px 200px; background-color: yellow;+ background-repeat: no-repeat;}
懂了吧？就是一个这种的小方块平铺形成的。假如我们的背景色不设置，那么这就是一个镂空的背景。
如何设置背景尺寸合适
我们可以看到我们的小圆孔是很均匀排列开的，假如我改一下背景的尺寸，效果如下：
.header { position: fixed; top: 0; width: 100%; height: 400px; background-image: radial-gradient(transparent 50px, #fff 50px); background-size: 120px 120px; background-color: yellow; /* background-repeat: no-repeat; */}
可以看到，圆孔变得密集了，那么背景尺寸调到多少会变成完全透明呢？我口算了一下，应该是50根号2，也就是大概71px。试试？
.header { position: fixed; top: 0; width: 100%; height: 400px; background-image: radial-gradient(transparent 50px, #fff 50px); background-size: 71px 71px; background-color: yellow; /* background-repeat: no-repeat; */}
为了看的更加清楚，我们将原本的白色改成黑色，并且把71px改成72px:
出现黑色点点了！说明我算的不错，一点不差，我可真棒！ok，咱们继续探索
这个蒙板还不错
我们现在要对标Element 官网那样的效果，我做了下面的例子：
.header { position: fixed; top: 0; width: 100%; height: 400px; background-image: radial-gradient(transparent 10px, #fff 10px); background-size: 40px 40px;}.container { padding-top: 400px; height: 200vh;}.circle { width: 100%; height: 200px; border-radius: 25px; background-color: red;}
修改下尺寸：
background-image: radial-gradient(transparent 1px, #fff 1px);background-size: 4px 4px;
至此，这个效果就基本做好了，但是还是有差别，人家的有毛毛的效果，我的没有。不行，得学习下人家是怎么做的！
Element 是怎么做的
代码如下：
.navbar-wrapper { position: relative; border-bottom: 1px solid var(--border-color); height: var(--header-height); padding: 0 12px 0 24px; background-image: radial-gradient(transparent 1px,var(--bg-color) 1px); background-size: 4px 4px; backdrop-filter: saturate(50%) blur(4px); -webkit-backdrop-filter: saturate(50%) blur(4px); top: 0;}
欧？backdrop-filter这个是什么，以前没用过耶，尝试一下。这里有两个属性，第一个有点陌生，第二个应该是设置毛玻璃效果的虚化吧，先试咱们会的：
确实有虚化效果。那saturate又是干嘛的呢？试试就知道了：
唔，变暗了呢
查了下英文意思是使湿透的意思，emmmm,好像红色的衣服湿了确实就变成暗红了，有点意思。这边有个百分比的设置，尝试一下效果：
我们将百分比设置为10%：
完全黑了，红黑了，那湿的透透的了，哈哈哈~
ok，今天分享就到这，觉得有意思的朋友们记得点赞关注加收藏，因为今天你们学会了一个单词：saturate:湿透了。 sa(湿)tu(透)rate(了) ？？？？？？？？？？
推荐学习：《css视频教程》
@charset “UTF-8″;.markdown-body{word-break:break-word;line-height:1.75;font-weight:400;font-size:14px;overflow-x:hidden;color:var(–cyanosis-base-color);transition:color .35s;–cyanosis-base-color:#353535;–cyanosis-title-color:#005bb7;–cyanosis-strong-color:#2196f3;–cyanosis-em-color:#4fc3f7;–cyanosis-del-color:#ccc;–cyanosis-link-color:#3da8f5;–cyanosis-linkh-color:#007fff;–cyanosis-border-color:#bedcff;–cyanosis-border-color-2:#ececec;–cyanosis-bg-color:#fff;–cyanosis-blockquote-color:#8c8c8c;–cyanosis-blockquote-bg-color:#f0fdff;–cyanosis-code-color:#c2185b;–cyanosis-code-bg-color:#fff4f4;–cyanosis-code-pre-color:#f8f8f8;–cyanosis-table-border-color:#c3e0fd;–cyanosis-table-th-color:#dff0ff;–cyanosis-table-tht-color:#005bb7;–cyanosis-table-tr-nc-color:#f7fbff;–cyanosis-table-trh-color:#e0edf7;–cyanosis-slct-title-color:#005bb7;–cyanosis-slct-titlebg-color:rgba(175,207,247,0.25);–cyanosis-slct-text-color:#c80000;–cyanosis-slct-bg-color:rgba(175,207,247,0.25);–cyanosis-slct-del-color:#999;–cyanosis-slct-elbg-color:#e8ebec;–cyanosis-slct-codebg-color:#ffeaeb;–cyanosis-slct-prebg-color:rgba(160,200,255,0.25)}.markdown-body.__dark{–cyanosis-base-color:#cacaca;–cyanosis-title-color:#ddd;–cyanosis-strong-color:#fe9900;–cyanosis-em-color:#ffd28e;–cyanosis-del-color:#ccc;–cyanosis-link-color:#ffb648;–cyanosis-linkh-color:#fe9900;–cyanosis-border-color:#ffe3ba;–cyanosis-border-color-2:#ffcb7b;–cyanosis-bg-color:#2f2f2f;–cyanosis-blockquote-color:#c7c7c7;–cyanosis-blockquote-bg-color:rgba(255,199,116,0.1);–cyanosis-code-color:#000;–cyanosis-code-bg-color:#ffcb7b;–cyanosis-code-pre-color:rgba(255,227,185,0.5);–cyanosis-table-border-color:#fe9900;–cyanosis-table-th-color:#ffb648;–cyanosis-table-tht-color:#000;–cyanosis-table-tr-nc-color:#6d5736;–cyanosis-table-trh-color:#947443;–cyanosis-slct-title-color:#000;–cyanosis-slct-titlebg-color:#fe9900;–cyanosis-slct-text-color:#00c888;–cyanosis-slct-bg-color:rgba(175,207,247,0.25);–cyanosis-slct-del-color:#999;–cyanosis-slct-elbg-color:#000;–cyanosis-slct-codebg-color:#ffcb7b;–cyanosis-slct-prebg-color:rgba(160,200,255,0.25)}.markdown-body h1{padding-bottom:4px;font-size:30px}.markdown-body h1,.markdown-body h2{margin-top:36px;margin-bottom:10px;line-height:1.5;color:var(–cyanosis-title-color);transition:color .35s}.markdown-body h2{position:relative;padding-left:10px;padding-right:10px;padding-bottom:10px;font-size:24px;border-bottom:1px solid var(–cyanosis-border-color-2)}.markdown-body h2:before{content:”「”;position:absolute;top:-6px;left:-14px}.markdown-body h2:after{content:”」”;position:relative;top:6px;right:auto}.markdown-body h3{position:relative;padding-bottom:0;margin-top:30px;margin-bottom:10px;font-size:20px;line-height:1.5;color:var(–cyanosis-title-color);padding-left:6px;transition:color .35s}.markdown-body h3:before{content:”»”;padding-right:6px;color:var(–cyanosis-strong-color)}.markdown-body h4{margin-top:24px;font-size:16px}.markdown-body h4,.markdown-body h5{padding-bottom:0;margin-bottom:10px;line-height:1.5;color:var(–cyanosis-title-color);padding-left:6px;transition:color .35s}.markdown-body h5{margin-top:18px;font-size:14px}.markdown-body h6{padding-bottom:0;margin-top:12px;margin-bottom:10px;font-size:12px;line-height:1.5;color:var(–cyanosis-title-color);padding-left:6px;transition:color .35s}.markdown-body p{line-height:inherit;margin-top:16px;margin-bottom:16px}.markdown-body img{max-width:100%}.markdown-body hr{position:relative;width:98%;height:1px;margin-top:32px;margin-bottom:32px;background-image:linear-gradient(90deg,var(–cyanosis-link-color),rgba(255,0,0,.3),hsla(0,0%,100%,.1),rgba(255,0,0,.3),var(–cyanosis-link-color));border-width:0;overflow:visible}.markdown-body hr:after{content:””;position:absolute;margin:auto;left:0;right:0;bottom:0;top:0;display:inline-block;width:60px;height:20px;background-color:var(–cyanosis-bg-color);background-image:url(data:image/png;base64,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);background-repeat:no-repeat;background-size:auto 100%;background-position-x:center;transition:background-color .5s}.markdown-body code{padding:.065em .4em;font-size:.87em;color:var(–cyanosis-code-color);word-break:break-word;overflow-x:auto;background-color:var(–cyanosis-code-bg-color);border-radius:2px}.markdown-body code,.markdown-body pre{font-family:Menlo,Monaco,Consolas,Courier New,monospace}.markdown-body pre{overflow:auto;position:relative;line-height:1.75}.markdown-body pre>code{display:block;padding:16px 12px;margin:0;font-size:12px;color:#333;word-break:normal;overflow-x:auto;background:var(–cyanosis-code-pre-color)}.markdown-body pre>code::-webkit-scrollbar{width:4px;height:4px}.markdown-body pre>code::-webkit-scrollbar-track{background-color:var(–cyanosis-border-color)}.markdown-body pre>code::-webkit-scrollbar-thumb{background-color:var(–cyanosis-strong-color);border-radius:10px}.markdown-body a{position:relative;text-decoration:none;color:var(–cyanosis-link-color);border-bottom:1px solid var(–cyanosis-border-color)}.markdown-body a:hover{border-bottom-color:var(–cyanosis-linkh-color)}.markdown-body a:active,.markdown-body a:hover{color:var(–cyanosis-linkh-color)}.markdown-body a:after{position:absolute;content:””;top:100%;left:0;width:100%;opacity:0;border-bottom:1px solid var(–cyanosis-border-color);transition:top .3s,opacity .3s;transform:translateZ(0)}.markdown-body a:hover:after{top:0;opacity:1;border-bottom-color:var(–cyanosis-linkh-color)}.markdown-body table{display:inline-block!important;font-size:12px;width:auto;max-width:100%;overflow:auto;border:1px solid var(–cyanosis-table-border-color);border-spacing:0;border-collapse:collapse}.markdown-body table thead{color:#000;text-align:left;font-size:14px;background:#f6f6f6}.markdown-body table tr:nth-child(2n){background-color:var(–cyanosis-table-tr-nc-color)}.markdown-body table tr:hover{background-color:var(–cyanosis-table-trh-color)}.markdown-body table td,.markdown-body table th{padding:12px 8px;line-height:24px;border:1px solid var(–cyanosis-table-border-color)}.markdown-body table th{color:var(–cyanosis-table-tht-color);background-color:var(–cyanosis-table-th-color)}.markdown-body table td{min-width:120px}.markdown-body blockquote{color:var(–cyanosis-blockquote-color);border-left:4px solid var(–cyanosis-strong-color);background-color:var(–cyanosis-blockquote-bg-color);padding:1px 20px;margin:22px 0;transition:color .35s}.markdown-body blockquote:after{display:block;content:””}.markdown-body blockquote>p{margin:10px 0}.markdown-body b,.markdown-body blockquote>b,.markdown-body blockquote>strong,.markdown-body strong{color:var(–cyanosis-strong-color)}.markdown-body em,.markdown-body i{color:var(–cyanosis-em-color)}.markdown-body del{color:var(–cyanosis-del-color)}.markdown-body ol,.markdown-body ul{padding-left:28px}.markdown-body ol li,.markdown-body ul li{margin-bottom:0;list-style:inherit}.markdown-body ol li .task-list-item,.markdown-body ul li .task-list-item{list-style:none}.markdown-body ol li .task-list-item ol,.markdown-body ol li .task-list-item ul,.markdown-body ul li .task-list-item ol,.markdown-body ul li .task-list-item ul{margin-top:0}.markdown-body ol ol,.markdown-body ol ul,.markdown-body ul ol,.markdown-body ul ul{margin-top:4px}.markdown-body ol li{padding-left:6px}.markdown-body details>summary{outline:none;color:var(–cyanosis-title-color);font-size:20px;font-weight:bolder;border-bottom:1px solid var(–cyanosis-border-color);cursor:pointer}.markdown-body details>p{padding:10px 20px;margin:10px 0 0;color:#666;background-color:var(–cyanosis-blockquote-bg-color);border:2px dashed var(–cyanosis-strong-color)}.markdown-body h1::selection,.markdown-body h2::selection,.markdown-body h3::selection,.markdown-body h4::selection,.markdown-body h5::selection,.markdown-body h6::selection{color:var(–cyanosis-slct-title-color);background-color:var(–cyanosis-slct-titlebg-color)}.markdown-body ol li::selection,.markdown-body p::selection,.markdown-body ul li::selection{color:var(–cyanosis-slct-text-color);background-color:var(–cyanosis-slct-bg-color)}.markdown-body a::selection,.markdown-body b::selection,.markdown-body em::selection,.markdown-body i::selection,.markdown-body strong::selection{background-color:var(–cyanosis-slct-elbg-color)}.markdown-body del::selection{color:var(–cyanosis-slct-del-color);background-color:var(–cyanosis-slct-elbg-color)}.markdown-body table thead th::selection{background-color:transparent}.markdown-body table tbody td::selection{background-color:var(–cyanosis-slct-bg-color)}.markdown-body code::selection{background-color:var(–cyanosis-slct-codebg-color)}.markdown-body pre>code::selection{background-color:var(–cyanosis-slct-prebg-color)}.markdown-body .contains-task-list{padding-left:14px;list-style:none}.markdown-body .contains-task-list input[type=checkbox]{position:relative}.markdown-body .contains-task-list input[type=checkbox]:before{content:””;position:absolute;top:0;left:0;right:0;bottom:0;width:inherit;height:inherit;background:#f0f8ff;border:1px solid #add6ff;border-radius:2px;box-sizing:border-box;z-index:1}.markdown-body .contains-task-list input[type=checkbox]:checked:after{content:”✓”;position:absolute;top:-12px;left:0;right:0;bottom:0;width:0;height:0;color:#f55;font-size:20px;font-weight:700;z-index:2}@media (max-width:720px){.markdown-body h1{font-size:24px}.markdown-body h2{font-size:20px}.markdown-body h3{font-size:18px}}
以上就是“saturate”，又get了新的CSS知识！的详细内容，更多请关注创想鸟其它相关文章！
版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。
如发现本站有涉嫌抄袭侵权/违法违规的内容， 请发送邮件至 chuangxiangniao@163.com 举报，一经查实，本站将立刻删除。
发布者：程序猿，转转请注明出处：https://www.chuangxiangniao.com/p/1625217.html
微信扫一扫 
支付宝扫一扫 
