Bootstrap 4

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.2/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.2/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.7/flatly/bootstrap.min.css">
<ul class="list-group">
  <li class="list-group-item">
    <div class="container-fluid">
      <div class="col-sm-5">
        <div class="row">
          <div class="col">
            <div class="row">
              <div class="col">Row 1</div>
            </div>
            <div class="row">
              <div class="col">Row 2</div>
            </div>
            <div class="row">
              <div class="col">Row 3</div>
            </div>
            <div class="row">
              <div class="col">Row 4</div>
            </div>
          </div>
        </div>
      </div>
      <div class="col-sm-3">
        <div class="row">
          <div class="col">
            <div class="row">
              <div class="col">Row 1</div>
            </div>
            <div class="row">
              <div class="col">Row 2</div>
            </div>
            <div class="row">
              <div class="col">Row 3</div>
            </div>
            <div class="row">
              <div class="col">Row 4</div>
            </div>
          </div>
        </div>
      </div>
      <div class="col-sm-3">
        <div class="row">
          <div class="col">
            <div class="row">
              <div class="col">Row 1</div>
            </div>
            <div class="row">
              <div class="col">Row 2</div>
            </div>
            <div class="row">
              <div class="col">Row 3</div>
            </div>
            <div class="row">
              <div class="col">Row 4</div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </li>
  <li class="list-group-item">
    <div class="container-fluid">
      <div...

CSS

.list-group-item {
  margin: 10px;
  
}