小编Nat*_*röm的帖子

#container {
  position: fixed;
  right: 0px;
  width: 400px;
  background: #f1f1f1;
  height: 100vh;
}
ul {
  width: 100%;
  margin: 0;
  padding: 0;
}
li {
  box-sizing: border-box;
  width: 25%;
  display: inline-block;
  border: 1px solid #ccc;
  list-style-type: none;
  min-height: 100px;
  margin: 0px;
}

<div id="container">
   <ul>
      <li>test</li><li></li><li>test</li><li></li>
   </ul>
</div>

.cover-losos{
  background: url('http://patwoj.hekko24.pl/zdrowie/images/losos.jpg') no-repeat center center;
  -webkit-background-size: 100%;
  -moz-background-size: 100%;
  -o-background-size: 100%;
  background-size: 100%;
}

<div class="container-fluid">
   <div class="row">
      <div class="col-md-12 cover-losos">
      </div>
   </div>
</div>