css 兼容苹果x更高机型触控条(安全区域)

1.  head标签的meta添加 viewport-fit=cover 详情如下；

    <meta content="viewport-fit=cover" >

2.给最外部标签添加以下css样式：

body,html{

    padding-top: constant(safe-area-inset-top);

    padding-left: constant(safe-area-inset-left);

    padding-right: constant(safe-area-inset-right);

    padding-bottom: constant(safe-area-inset-bottom);

    padding-top: env(safe-area-inset-top);

    padding-left: env(safe-area-inset-left);

    padding-right: env(safe-area-inset-right);

    padding-bottom: env(safe-area-inset-bottom);

}