4dkankan-components/docs/examples-bk/dialog/align-center.vue

<template>
    <el-button text @click="centerDialogVisible = true">Click to open the Dialog</el-button>

    <el-dialog v-model="centerDialogVisible" title="Warning" width="30%" align-center>
        <span>Open the dialog from the center from the screen</span>
        <template #footer>
            <span class="dialog-footer">
                <el-button @click="centerDialogVisible = false">Cancel</el-button>
                <el-button type="primary" @click="centerDialogVisible = false">Confirm</el-button>
            </span>
        </template>
    </el-dialog>
</template>
<script lang="ts" setup>
import { ref } from 'vue'

const centerDialogVisible = ref(false)
</script>
<style scoped>
.dialog-footer button:first-child {
    margin-right: 10px;
}
</style>