Bootstrap - Common row systems

by jonahe

HTML

<script src="//code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<link rel="stylesheet" href="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="//stackpath.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<!-- 
  Bootstrap docs: https://getbootstrap.com/docs
-->

<div class="container">
  <h4>
    automatically sizes the column to take up equal space.
  </h4>
  <div class="row">
    <div class="col">
      1 of 2
    </div>
    <div class="col">
      2 of 2
    </div>
  </div>
  <div class="row">
    <div class="col">
      1 of 3
    </div>
    <div class="col">
      2 of 3
    </div>
    <div class="col">
      3 of 3
    </div>
  </div> 
  <div class="row">
    <div class="col-sm text-center">
     col-sm 1 of 3
    </div>
    <div class="col-sm">
     col-sm 2 of 3
    </div>
    <div class="col-sm">
     col-sm 3 of 3
    </div>
  </div>
  
  <div class="row">
    <div class="col-lg">
     col-lg 1 of 3
    </div>
    <div class="col-lg">
     col-lg 2 of 3
    </div>
    <div class="col-lg">
     col-lg 3 of 3
    </div>
  </div>
  
  <div class="row">
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 1 of 6
    </div>
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 2 of 6
    </div>
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 3 of 6
    </div>
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 4 of 6
    </div>
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 5 of 6
    </div>
    <div class="col-md-6 col-lg-4">
      col-md-6 col-lg-4  - 6 of 6
    </div>
  </div>  
</div>

CSS

.row {
  background: #f8f9fa;
  margin-top: 20px;
}

[class^="col"] {
  border: solid 1px #6c757d;
  padding: 10px;
}