Very well bootstrap tutorial
<!DOCTYPE html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″>
<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
<meta http-equiv=”X-UA-Compatible” content=”ie=edge”>
<title>Bootstrap 4 Introduction</title>
<link rel=”stylesheet” href=”https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css” integrity=”sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm”
crossorigin=”anonymous”>
<style>
body {
margin: 30px;
}
.my-container {
border: 1px solid green;
}
.my-row {
border: 3px solid red;
height: 300px;
}
.my-col {
border: 3px dotted blue;
}
</style>
</head>
<body>
<div class=”container my-container”>
<div class=”row my-row”>
<div class=”col-md-4 col-sm-6 my-col”>
Row 1 Col 1
</div>
<div class=”col-md-8 col-sm-6 my-col”>
Row 1 Col 2
</div>
</div>
<div class=”row justify-content-between align-items-stretch my-row”>
<div class=”col-4 my-col order-md-12″>
Row 2 Col 1
</div>
<div class=”col-4 offset-md-2 my-col align-self-start order-md-2″>
Row 2 Col 2
</div>
</div>
</div>
</body>
</html>