vue项目 手撸全屏遮罩层

<template>
  <div>
    <div id="mask" v-show="isPay">
      <div class="mask_img"></div>
    </div>
    <button @click="mask()">11111</button>
  </div>
</template>

<style scoped>
#mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
}
.mask_img {
  background: yellow;
  width: 316px;
  height: 200px;
  z-index: 999;
  position: fixed;
  right: 0px;
}
</style>

<script>
export default {
  data() {
    return {
      isPay: false
    };
  },
  methods: {
    mask() {
      this.isPay = !this.isPay;
    }
  }
};
</script>