:root {
--safe-area-inset-top: 0;
--safe-area-inset-bottom: 0;
}
@supports (width: constant(safe-area-inset-top)) {
:root {
--safe-area-inset-top: constant(safe-area-inset-top);
--safe-area-inset-bottom: constant(safe-area-inset-bottom);
}
}
@supports (width: env(safe-area-inset-top)) {
:root {
--safe-area-inset-top: env(safe-area-inset-top);
--safe-area-inset-bottom: env(safe-area-inset-bottom);
}
}
//具体使用
#app {
padding-top: var(--safe-area-inset-top);
padding-bottom: var(--safe-area-inset-bottom);;
}
原文：https://www.cnblogs.com/tylz/p/12870174.html