Bootstrap 4

HTML

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
<script>
function focusMethod(element) {
  var target = document.getElementById(element.id + '_guidelines');
	target.parentNode.scrollTop = target.offsetTop;
}
</script>
<nav id="navbar" class="navbar navbar-light fixed-top bg-light flex-md-nowrap p-0 shadow">
  <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="#">Company name</a>
  <ul class="navbar-nav px-3">
    <li class="nav-item text-nowrap">
      <a class="nav-link" href="#">Sign out</a>
    </li>
  </ul>
</nav>
<div id="sidebar">
  
</div>
<div id="main">
  <ul class="nav nav-tabs">
    <li class="nav-item">
      <a class="nav-link active" href="#">Active</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link" href="#">Link</a>
    </li>
    <li class="nav-item">
      <a class="nav-link disabled" href="#">Disabled</a>
    </li>
  </ul>
  <div class="container">
      <div class="row">
        <div class="col-3">
          <div id="guidelines">
            <div id="input_one_guidelines">
              <h5>
                Description for input one
              </h5>
              <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Praesent elementum a massa eu mollis. Curabitur blandit quis sem vel fringilla. Ut semper, tellus quis imperdiet tempor, massa augue luctus eros, eget tincidunt odio ante vel massa. Nullam et tristique leo. Nulla dignissim malesuada nibh, quis tincidunt augue. Pellentesque eget cursus quam. Aenean vitae nisi eget arcu posuere consectetur a ac neque. Nullam ut aliquam ante, in efficitur tellus. Nunc eget tellus accumsan, pharetra arcu non, porttitor ante. Aenean tortor arcu, vestibulum in tincidunt ut, ullamcorper et tortor. Duis porta velit et lectus congue condimentum. Nunc ante lectus, efficitur in egestas sed, pellentesque nec nisi. Sed rhoncus...

CSS

#navbar {
  margin-left:118px;
}
#sidebar {
  width: 118px;
  background: #343a40;
  color: #fff;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  overflow: scroll;
}
#main {
  margin-left:118px;
  margin-top:48px;
}
#guidelines, #content {
  height:calc(100vh - 90px);
  overflow:scroll;
}
.form-group {
  margin:25px 0;
}