# CSS Help: Blurred Background behind Category/Topic Lists

**URL:** <https://meta.discourse.org/t/css-help-blurred-background-behind-category-topic-lists/51370>\
**Category:** Support\
**Created:** [October 11, 2016, 1:34am UTC](https://meta.discourse.org/t/css-help-blurred-background-behind-category-topic-lists/51370 "2016-10-11T01:34:31Z")\
**Posts on this page:** 1\
**Showing post:** 2

<div class="post-metadata">

**Author:** ![Falco](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/falco/32/179432_2.png) [@Falco](https://meta.discourse.org/u/Falco)\
**Post date:** [October 11, 2016, 2:11am UTC](https://meta.discourse.org/t/css-help-blurred-background-behind-category-topic-lists/51370/2 "2016-10-11T02:11:15Z")

</div>

For blurred backgrounds you can use:

```CSS
body::after {
    content: "";
    background-size: cover;
    background-image: url(imageurl);
    opacity: 0.3;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    position: fixed;
    z-index: -1;
    width: 100vw;
    height: 100vh;
    filter: blur(10px);
}

```

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