display布局实现一侧的盒子高度与另一侧盒子的高度等高

实现两边容器的高度等高主要是用 align-items: stretch 这个属性

stretch 拉伸: 子元素没有高度或高度为auto，将占满整个容器的高度

<template>
	<div>
		<h3>我是测试页面</h3>
		<div class="container">
			<div class="left-column"></div>
			<div class="right-colum">
				<div class="box1" @click="addHeight">添加高度</div>
				<div class="box2"></div>
			</div>
		</div>
	</div>
</template>
<script setup lang="ts">
import { ref, computed } from "vue";
const height = ref(100);
const box1Height = computed(() => {
	return height.value + "px";
})
// 增加高度
const addHeight = () => {
	height.value += 50;
}
</script>
<style lang="scss" scoped>
.container {
	display: flex;
	align-items: stretch; // 拉伸: 子元素没有高度或高度为auto，将占满整个容器的高度
	.left-column {
		width: 400px;
		margin-right: 12px;
		background-color: cadetblue;
	}
	.right-colum {
		width: 200px;
	}
	.box1 {
		height: v-bind(box1Height);
		margin-bottom: 12px;
		background-color: palevioletred;
	}
	.box2 {
		height: 100px;
		background-color: peru;
	}
}
</style>