vue遮罩层

<template>
  <div class="hello">
    <button @click="toggleModal">打开Modal对话框</button>
    <div class="modal-backdrop" v-if="showModal">
      <div class="modal">
        <div class="modal-header">
          <h3>我是一个Modal的标题</h3>
        </div>
        <div class="modal-body">
          <p>我是一个Modal的内容</p>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn-close" @click="closeme">关闭</button>
          <button type="button" class="btn-confirm">确认</button>
        </div>
      </div>

    </div>
  </div>
</template>

<script>
export default {
  name: 'testZCC',
  data () {
    return {
      showModal:false
    }
  },
  methods:{
    toggleModal() {
      this.showModal = !this.showModal;
    },
    closeme() {
      this.showModal = false;
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
.modal-backdrop {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0,0,0,.3);
  display: flex;
  justify-content: center;
  align-items: center;
}
.modal {
  background-color: #fff;
  box-shadow: 2px 2px 20px 1px;
  overflow-x:auto;
  display: flex;
  flex-direction: column;
  border-radius: 16px;
  width: 700px;
}
.modal-header {
  border-bottom: 1px solid #eee;
  color: #313131;
  justify-content: space-between;
  padding: 15px;
  display: flex;
}
.modal-footer {
  border-top: 1px solid #eee;
  justify-content: flex-end;
  padding: 15px;
  display: flex;
}
.modal-body {
  position: relative;
  padding: 20px 10px;
}
.btn-close, .btn-confirm {
  border-radius: 8px;
  margin-left:16px;
  width:56px;
  height: 36px;
  border:none;
  cursor: pointer;
}
.btn-close {
  color: #313131;
  background-color:transparent;
}
.btn-confirm {
  color: #fff;
  background-color: #2d8cf0;
}
</style>