* {
margin: 0;
padding: 0;
}
.contriner {
100%;
height: 100%;
background: red;
position: relative;
}
.topBar {
position: relative;
100%;
height: 80px;
background: blue;
z-index: 2;
}
.asids {
position: absolute;
top: 0;
bottom: 0;
160px;
padding-top: 80px;
background: gold;
z-index: 1;
}
.view {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin-top: 85px;
margin-left: 165px;
margin-right: 20px;
margin-bottom: 20px;
background: green;
overflow-y: auto;
}
.content {
100%;
height: 1000px;
background: #fff;
}
<div class="contriner">
<div class="topBar">
头部
</div>
<div class="asids">
侧边栏
</div>
<div class="view">
<div class="content"></div>
</div>
</div>