![[CSS] CSS display:flex实现内容水平垂直居中展示](https://1200zi.500zi.com/uploadfile/img/15/445/00171ef12ffdcfc03fd5314d015283b6.jpg)
display:flex实现内容水平垂直居中展示
需要增加下面两点就能实现
首先父级元素必须有高度，没有高度就无法垂直居中，如果想全屏垂直居中，可以设置高度为100vh
比如body设置为这样
body{display: flex;justify-content: center;align-items: center;height: 100vh;}
里面的子元素就会垂直水平居中显示
源码：
<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="renderer" content="webkit"><meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><title>独立私有化智能在线客服系统</title></head><body><style>body{background: rgb(242,243,247);display: flex;justify-content: center;align-items: center;height: 100vh;}.sub,.main,.admin{letter-spacing: 18px;font-family: fangsong;font-size: 38px;writing-mode: vertical-rl;}.main{font-size: 60px;margin: 0px 20px;}.admin{display: block;text-decoration: none;color: red;border: 2px solid red;padding: 10px 0px 2px 0px;border-radius: 12px;margin-top: 150px;font-size: 20px;letter-spacing: 5px;}.admin:hover{color: red;}.sub span{font-size: 50px;}</style><a href="/login" target="_blank" class="admin">在线客服</a><h1 class="main">各路相知</h1><div class="sub">互聊片刻，<span>结交</span></div></body></html>
效果：
