<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
.child {
padding: 10px;
margin: 10px;
background-color: #eee;
}
.container {
padding: 10px;
background-color: yellow;
display: -webkit-flex;
display: flex;
}
.child.one {
-webkit-flex: 5 1 200px;
flex: 5 1 200px;
color: green;
}
.child.two {
-webkit-flex: 1 3 200px;
flex: 1 3 200px;
color: purple;
}
</style>
</head>
<body>
<div class="container">
<div class="child one">
Child One<br>Lorem ipsum<br>dolor sit amet<br>This is
a bit longer line
</div>
<div class="child two">Two</div>
</div>
</body>
</html>