WechatApp/unpackage/dist/dev/mp-weixin/uni_modules/uni-popup/components/uni-popup/uni-popup.wxss

.uni-popup {
  position: fixed;
  z-index: 99;
}
.uni-popup.top, .uni-popup.left, .uni-popup.right {
  top: 0;
}
.uni-popup .uni-popup__wrapper {
  display: block;
  position: relative;
  /* iphonex 等安全区设置，底部安全区适配 */
}
.uni-popup .uni-popup__wrapper.left, .uni-popup .uni-popup__wrapper.right {
  padding-top: 0;
  flex: 1;
}
.fixforpc-z-index {
  z-index: 999;
}
.fixforpc-top {
  top: 0;
}