现代化 CSS 重置方案，统一浏览器默认样式差异。
引用代码
<link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/normalize/8.0.1/normalize.min.css">资源地址
https://cdn.bootcdn.net/ajax/libs/normalize/8.0.1/normalize.min.css
现代化 CSS 重置方案，统一浏览器默认样式差异。
<link rel="stylesheet" href="https://cdn.bootcdn.net/ajax/libs/normalize/8.0.1/normalize.min.css">https://cdn.bootcdn.net/ajax/libs/normalize/8.0.1/normalize.min.css