# Use Abbreviated Hex Code

说明：

```
许多人对超过 1600 万种颜色感觉十分地抓狂，并且 hex code 非常难以记忆。幸运的是，你可以缩短它。

例如，红，hex code 是 #FF0000 ，可被缩写成 #F00。也就是说，一位表示红，一位表示绿，一位表示蓝。

这会把所有可能的颜色数减少至大约 4000 种，但是浏览器会把 #FF0000 和 #F00 解释为完全相同的颜色。

继续前进，尝试使用 #F00 把 body 元素的背景色改为红色。
```

原始代码：

```
<style>
  body {
    background-color: #111111;
  }
</style>
```

调试代码：

```
<style>
  body {
    background-color: #F00;
  }
</style>
```


---

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