JS Bin
// source https://jsbin.com/ronufuy
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
<style id="jsbin-css">
.container{
height:960px;
width:540px;
background:#ddd;
display:flex;
flex-direction:column;
}
body{
margin:0;
height:100%;
}
.a1{
flex:122;
display:flex;
flex-direction:row;
background:white;
}
.a2{
flex:1632
}
.a3{
flex:166;
background:white;
}
.b1{
flex:1;
border-style:dashed;
text-align:center;
}
</style>
</head>
<body>
<div class="container">
<div class="a1">
<div class="b1">Notebook1</div>
<div class="b1">b2</div>
</div>
<div class="a2">a2</div>
<div class="a3">a3</div>
</div>
<script id="jsbin-source-css" type="text/css">.container{
height:960px;
width:540px;
background:#ddd;
display:flex;
flex-direction:column;
}
body{
margin:0;
height:100%;
}
.a1{
flex:122;
display:flex;
flex-direction:row;
background:white;
}
.a2{
flex:1632
}
.a3{
flex:166;
background:white;
}
.b1{
flex:1;
border-style:dashed;
text-align:center;
}</script>
</body>
</html>
.container{
height:960px;
width:540px;
background:#ddd;
display:flex;
flex-direction:column;
}
body{
margin:0;
height:100%;
}
.a1{
flex:122;
display:flex;
flex-direction:row;
background:white;
}
.a2{
flex:1632
}
.a3{
flex:166;
background:white;
}
.b1{
flex:1;
border-style:dashed;
text-align:center;
}