appointment-mp/dist/overlay/index.wxml

<van-transition
  show="{{ show }}"
  custom-class="van-overlay"
  custom-style="z-index: {{ zIndex }}; {{ mask ? 'background-color: rgba(0, 0, 0, .7);' : '' }}; {{ customStyle }}"
  bind:tap="onClick"
  catch:touchmove="noop"
/>