如何在CSS中制作半方形背景

问题描述：

是否有可能在纯CSS背景中制作半方形(如图像上所示). 我知道可以使用图像作为背景，但是我需要使用5种不同的颜色，也许将来可以更改颜色.

Is it possible to make in pure css background for half square like on the image. I know that it can be done with an image as background, but I need to use 5 different colours, and maybe in future the colours can be changed.

答

如果div具有固定大小，则可以使用边框制作两个三角形，如

If your divs have fixed sizes, you can use borders to make two triangles as described in How do CSS triangles work?:

div{
  display:inline-block;
  border-top:100px solid red;
  border-right:100px solid grey;
  }

<div></div>

要制作其他尺寸和颜色，您需要调整边框属性:

To make other sizes, colors, you need to tweak the border properties :

div {
  display: inline-block;
}
div:nth-child(1) {
  border-right: 100px solid red;
  border-top: 100px solid grey;
}
div:nth-child(2) {
  border-left: 100px solid red;
  border-top: 100px solid grey;
}
div:nth-child(3) {
  border-right: 50px solid red;
  border-top: 100px solid grey;
}
div:nth-child(4) {
  border-right: 100px solid red;
  border-bottom: 50px solid grey;
}

<div></div>
<div></div>
<div></div>
<div></div>
<div></div>

如何在CSS中制作半方形背景

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