父级div高固定 子级两个div上下 上边div高固定 下边自适应

<div class= "container">
<div class="left"></div>
<div class="right"></div>
</div>

<style>
.container{
position: relative;
width: 200px;
height: 600px;
border: 1px solid red;
}
.left{
width:100%;
height:200px;
background: gray;
}
.right{
position: absolute;
width: 100%;
top: 200px;
bottom: 0;
left: 0;
background: green;
}
</style>