更改Reveal.js中的背景图像样式 [英] Changing the background-image style in Reveal.js

问题描述

我试图访问reveal.js中的背景图像的样式有三个原因：

I am trying to access the styles of the background-image in reveal.js for three reasons:

a）我想覆盖背景图像我想用CSS模糊一些背景

a) I'd like to override the background image in the overviewmode b) I'd like to blur some backgrounds with CSS

我发现了两篇关于SO的文章帮助我：

I found two articles on SO that helped me:

a）如何定位背景image in reveal.js？
b） reveal.js背景颜色选择

但是我必须缺少一些东西，所以我创建了这个jsFiddle来演示这个问题：
http://jsfiddle.net/dirkk0/asya4grv/

But I must be missing something, so I created this jsFiddle to demonstrate the problem: http://jsfiddle.net/dirkk0/asya4grv/

 html.thisState .state-background {
     /* background image is NOT changed, but the backgroundcolor changes */
     background-color: rgba(0, 0, 0, 0.8);
     background-image: url('http://pngimg.com/upload/small/key_PNG1180.png');
 }

您可以看到突然出现两个背景图片。我做错了什么？

You can see that there are suddenly two background images. What am I doing wrong?

感谢，
Dirk

Thanks, Dirk

推荐答案

您必须覆盖.backgrounds类，而不是.state-background。背景图像不放置在.slides中。这就是为什么你的CSS代码不会模糊的背景图片。

You have to overwrite the ".backgrounds" class instead ".state-background". Background images are not placed in ".slides". That's why your CSS code wont blur the background images.

.backgrounds {
     -webkit-filter: blur(5px);
     -moz-filter: blur(50px);
     -o-filter: blur(5px);
     -ms-filter: blur(5px);
     filter: blur(5px);
 }

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