Bootstrap grid example
<!-- Bootstrap Grid Demo -->
<!DOCTYPE html>
<html lang="en-us">
<head>
<meta charset="UTF-8">
<title>Bootstrap Demo</title>
<!-- Bring in our bootstrap stylesheet -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<style>
.color {
background: salmon;
}
</style>
</head>
<body>
<!-- Our rows function in containers (grid created). -->
<div class="container">
<!-- Our columns function in rows. -->
<div class="row">
<!-- Columns have 12 areas of width to work with. -->
<!-- One third of screen (4/12) -->
<div class="col-md-4 color">
<!-- This is column 1 of 3 -->
</div>
<!-- One third of screen (4/12) -->
<div class="col-md-4 color">
<!-- This is column 2 of 3 -->
</div>
<!-- One third of screen (4/12) -->
<div class="col-md-4 color">
<!-- This is column 3 of 3 -->
</div>
<!-- Columns float left, so all adjacent rows will appear next to each other (as long as not all space gets taken up) -->
</div>
</div>
<!-- Creates the Overall Grid -->
<div class="container">
<!-- First Row -->
<div class="row">
<!-- First (and only column) -->
<div class="col-md-12 salmon">
<h1>I'm in Column 1 of 1. I stretch the entire width. And keep going.</h1>
</div>
</div>
<!-- Second Row -->
<div class="row">
<!-- First of two columns -->
<div class="col-lg-2 col-md-4 col-sm-6 col-xs-12 color">
<h1>I'm in Column 1 of 2</h1>
</div>
<!-- Second of two columns -->
<div class="col-md-4 col-sm-6 col-xs-12 color">
<h1>I'm in Column 2 of 2</h1>
</div>
</div>
</div>
</body>
</html>