<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><meta name="viewport"content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, viewport-fit=cover"><title>ios底部小横条高度适配</title><style>* {padding: 0;margin: 0;background-color: pink;}.container {display: flex;justify-content: center;align-items: center;position: fixed !important;width: 100vw;height: 50px;z-index: 100;background-color: blue;bottom: constant(safe-area-inset-bottom) !important; bottom: env(safe-area-inset-bottom) !important; }.bottom {display: flex;justify-content: center;align-items: center;position: fixed !important;bottom: 0;background-color: red;width: 100vw;height: constant(safe-area-inset-bottom) !important;height: env(safe-area-inset-bottom) !important;}</style><script>(document.getElementsByName('viewport')[0]).content ='user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, viewport-fit=cover';</script>
</head><body><div class="container"> 我是内容区域 </div><div class="bottom">我是距离底部的高度模块</div>
</body></html>