实现效果：

组件代码：注意 style 不能为 scoped

<template>

  <el-dialog class="my-dialog" v-model="isVisible" :show-close="false" :close-on-click-modal="false" :modal="false"
             modal-class="my-modal-class" :draggable="props.draggable">
    <template #header>
      <div class="my-header">
        {{ props.title }}
        <div style="cursor: pointer" @click="handleClose">
          <el-icon>
            <CloseBold/>
          </el-icon>
        </div>
      </div>
    </template>
    <div class="my-content">
      <slot name="content"/>
    </div>
  </el-dialog>

</template>

<script setup lang="ts">

import {ref} from "vue";
import {CloseBold} from "@element-plus/icons-vue";

const props = defineProps<{
  isVisible: boolean, // 是否显示
  title: string, // 标题
  draggable: boolean // 是否拖动
}>()

const isVisible = ref(props.isVisible)

const handleClose = () => {
  isVisible.value = false
}

</script>

<style lang="scss">

.my-dialog {
  pointer-events: auto; // 确保弹窗内的点击事件生效
  width: 400px;
  margin: 0;
  padding: 0;
  background: none;
  position: absolute;
  top: 300px;
  left: 500px;

  .el-dialog__header {
    padding-bottom: 0;

    .my-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 30px;
      background: rgba(89, 123, 244);
      color: #FFFFFF;
    }
  }

  .my-content {
    background: #FFFFFF;
    padding: 15px 30px;
    font-size: 16px;
  }
}

.my-modal-class {
  pointer-events: none; // 保证遮罩下的区域点击事件生效
}

</style>

使用：v-bind 同时绑定多个属性

<template>

  <custom-dialog v-bind="myDialog">
    <template #content>自定义内容</template>
  </custom-dialog>

</template>

<script setup lang="ts">

import CustomDialog from '@/components/CustomDialog/index.vue'
import {onMounted, ref} from "vue";

const myDialog = ref({
  isVisible: true,
  title: '二次封装el-dialog',
  draggable: true
})

</script>