ui-app {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  display: block;
  overflow: hidden;
  background: #000;
}

.ui-app-mask {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 1000;
  display: none;
  &.ui-show {
    display: block;
  }
}