body {
margin: 0;
border: 0;
font-family: 'Roboto Mono', monospace;
}
h1 {
font-size: 18px;
}
h2 {
font-size: 16px;
}
h1,
h2 {
text-align: center;
}
.top,
.middle,
.bottom {
width: 100px;
height: 100px;
background-color: dodgerblue;
border: 2px solid lightgrey;
margin: 10px 30px;
}
.top.side {
}
.top.center {
}
.middle.side {
}
.middle.center {
}
.bottom.side {
}
.bottom.center {
}
#top,
#middle,
#bottom {
display: flex;
background-color: Whitesmoke;
justify-content: center;
min-height: 200px;
align-items: center;
}
<!DOCTYPE html>
<html>
<head>
<title>Flex Grow and Shrink</title>
<link href='style.css' rel='stylesheet' />
<link href='https://fonts.googleapis.com/css?family=Roboto+Mono' rel='stylesheet'>
</head>
<body>
<h1>Step 1</h1>
<div id='top'>
<div class='top side'>
<h2>1</h2>
</div>
<div class='top center'>
<h2>2</h2>
</div>
<div class='top side'>
<h2>3</h2>
</div>
</div>
<h1>Step 2</h1>
<div id='middle'>
<div class='middle side'>
<h2>1</h2>
</div>
<div class='middle center'>
<h2>2</h2>
</div>
<div class='middle side'>
<h2>3</h2>
</div>
</div>
<h1>Step 3</h1>
<div id='bottom'>
<div class='bottom side'>
<h2>1</h2>
</div>
<div class='bottom center'>
<h2>2</h2>
</div>
<div class='bottom side'>
<h2>3</h2>
</div>
</div>
</body>
</html>