通过媒体查询适配所有 ios 刘海屏

废话不多说，直接上干货。本文主要解决如何通过媒体查询适配所有iphone刘海屏。

html:

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 
        viewport-fit 有3个值(contain，cover，auto),默认值是contain,
        需要设置为 cover ,css里面的safe-area-inset-***（***代表left,right,top,bottom）才会生效  
    -->
        
    <meta name="viewport" content="viewport-fit=cover">
    <title>兼容刘海屏写法</title>
</head>

<body>
    <div class="page-content">
        <div class="page-content-inner"></div>
    </div>
</body>

</html>

关于上面提到的 viewport-fit 和 safe-area-inset 相关知识可访问：CSS 在全屏iphonex（刘海屏）中的适配

scss：

//2021/01/25号前所有有刘海屏的iphone尺寸变量
// iphone x/xs/11 pro
$device-x: "screen and (device-width: 375px) and (device-height: 812px) and (-webkit-device-pixel-ratio: 3)";
// iphone xr/11
$device-xr: "screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 2)";
// iphone x/xs/11pro max
$device-xmax: "screen and (device-width: 414px) and (device-height: 896px) and (-webkit-device-pixel-ratio: 3)";
// iphone 12mini
$device-12mini: "screen and (device-width: 360px) and (device-height: 780px) and (-webkit-device-pixel-ratio: 3)";
// iphone 12/12pro
$device-12: "screen and (device-width: 390px) and (device-height: 844px) and (-webkit-device-pixel-ratio: 3)";
// iphone 12pro max
$device-12promax: "screen and (device-width: 428px) and (device-height: 926px) and (-webkit-device-pixel-ratio: 3)";

/* 刘海屏适配*/

@media #{unquote($device-x)},

#{unquote($device-xr)},

#{unquote($device-xmax)},

#{unquote($device-12mini)},

#{unquote($device-12)},

#{unquote($device-12promax)} {

.page-content.ios {

padding-top: constant(safe-area-inset-top); //为导航栏+状态栏的高度 88px

padding-top: env(safe-area-inset-top); //为导航栏+状态栏的高度 88px

padding-bottom: constant(safe-area-inset-bottom); //为底下圆弧的高度 34px

padding-bottom: env(safe-area-inset-bottom); //为底下圆弧的高度 34px