<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>flex</title> <style> *{ padding: 0; margin: 0; } body{ background-color: red; } .container{ width: 100%; min-height: 500px; background-color: yellowgreen; display: flex; } .container .left{ width: 200px; height: 500px; background-color: purple; } .container .right{ width: 150px; height: 500px; background-color: blue; } .container .center{ flex-grow: 1; height: 500px; background-color: orange; } </style></head><body><div class="container"><div class="left"></div> <div class="center"> </div> <div class="right"></div></div></body></html>无需多言，就是方便。
来源：https://www.cnblogs.com/hy96/p/11372709.html