Keyboard nav in linked lists

Only tabbing :(

by agib

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<div class="form-group">
  <input type="search" name="" id="" class="form-control" placeholder="Search here...">
</div>
<div class="form-group">
  <div class="list-group">
    <a href="#" class="list-group-item">
      Cras justo odio
    </a>
    <a href="#" class="list-group-item">Dapibus ac facilisis in Lorem ipsum dolor sit amet, consectetur adipisicing elit. Harum quasi, incidunt maxime commodi ut fugiat aliquam facere repellat, nisi obcaecati voluptatibus. Iusto, necessitatibus, inventore! Laborum eum explicabo quas vero perferendis!</a>
    <a href="#" class="list-group-item">Morbi leo risus</a>
    <a href="#" class="list-group-item">Porta ac consectetur ac</a>
    <a href="#" class="list-group-item">Vestibulum at eros</a>
  </div>
</div>

CSS

body {
  padding: 4rem;
}

.list-group-item:focus {
  outline: 2px solid dodgerblue;
  background-color: dodgerblue !important;
  color: white !important;
}