<div>使用 css 模糊部分背景图像 [英] <div> blur of part of Background image with css
问题描述
我使用这个 是否可以使用-webkit-filter:模糊()；在背景图像上? 解决方案来制作模糊的背景图像，效果很好！但我想在背景上制作一些 <div> 并使其模糊.所以背景应该在 <div> 下清晰和模糊.如果我在该 div 上移动模糊滤镜，它会变得模糊，但背景图像仍然清晰.
I use this Is it possible to use -webkit-filter: blur(); on background-image? solution to make blurry backgroung image and it works great! But I want to make some <div> over background and make it blurry. So background should be clear and blurry under <div> only. If I move blur filter on that div it became blur, but background image still clear.
HTML 很简单:
<body>
<div class = "background"></div>
<div class = "content"></div>
</body>
CSS 是:
.content{
width: 70%;
height: 70%;
border:2px solid;
border-radius:20px;
position: fixed;
top: 15%;
left: 15%;
z-index:10;
background-color: rgba(168, 235, 255, 0.2);
filter: blur(2px);
-webkit-filter: blur(2px);
-moz-filter: blur(2px);
-o-filter: blur(2px);
-ms-filter: blur(2px);
}
.background{
width:100%;
height:100%;
background-image:url('http://www.travel.com.hk/region/time_95.jpg');
z-index:0;
position:absolute;
}
这里是示例 http://jsfiddle.net/photolan/8gVGR/
所以我只需要使用 CSS 来模糊内容 div 下的背景.
So I need to blur background under content div only with CSS.
推荐答案
如果它必须是动态的，你应该有一些麻烦，但你可以从某个地方开始:
If it has to be dynamic, you should have some trouble, but you can have somewhere to start with this :
HTML
<div class="background"></div>
<div class="mask">
<div class="bluredBackground"></div>
</div>
<div class="content"></div>
CSS
.content {
width: 70%;
height: 70%;
border:2px solid;
border-radius:20px;
position: fixed;
top: 15%;
left: 15%;
z-index:10;
background-color: rgba(168, 235, 255, 0.2);
}
.background {
width:100%;
height:100%;
background-image:url('http://www.travel.com.hk/region/time_95.jpg');
z-index:2;
position:fixed;
}
.bluredBackground {
width:100%;
height:100%;
display:block;
background-image:url('http://www.travel.com.hk/region/time_95.jpg');
z-index:1;
position:absolute;
top:-20%;
left:-20%;
padding-left:20%;
padding-top:20%;
-webkit-filter: blur(2px);
}
.mask {
width: 70%;
height: 70%;
border:2px solid;
border-radius:20px;
position: fixed;
top: 15%;
left: 15%;
z-index:10;
overflow:hidden;
}
这篇关于<div>使用 css 模糊部分背景图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
