.taro-mask {
  position: fixed;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  height: 100%;
  z-index: 1000;
}
.taro-mask_button {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background: #000;
}
.taro-mask_button-transparent {
  background: transparent;
}