HTML 和 CSS 背景图像缩放以适应屏幕
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HTML and CSS background image scaling to fit screens
提问by user3435927
I am currently working on building my portfolio website. I am using HTML and CSS. I have an image I am using for my background but the background remains the same size regardless of the size of the screen. What code should I use? Should I upgrade my code to CSS3/HTML5 and if so what would be the code for that? Thank you very much for your time and help ahead of time, this is a detail that is driving me nuts and a huge hang up when showing my work.
我目前正在建立我的投资组合网站。我正在使用 HTML 和 CSS。我有一个用于我的背景的图像，但无论屏幕大小如何，背景都保持相同的大小。我应该使用什么代码？我应该将我的代码升级到 CSS3/HTML5，如果是这样，那代码是什么？非常感谢您的时间和提前帮助，这是一个让我发疯的细节，并且在展示我的作品时会遇到很大的困难。
回答by ProllyGeek
background-size : 100% auto
this gonna set width to 100% and height to auto
这会将宽度设置为 100%，将高度设置为自动
always search well before you post a question , this might be a good reference as a beginner :
在发布问题之前始终进行搜索，作为初学者，这可能是一个很好的参考：
回答by manosim
Have a look at the code below:
看看下面的代码：
html {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
