W3Schools Tryit Editor

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<body>
<div class="w3-container">

<h2>Navigation Bar with Icons</h2>

<p>w3-small:</p>
<div class="w3-bar w3-light-grey w3-border w3-small">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

<p>Default:</p>
<div class="w3-bar w3-light-grey w3-border">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

<p>w3-large:</p>
<div class="w3-bar w3-light-grey w3-border w3-large">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

<p>w3-xlarge:</p>
<div class="w3-bar w3-light-grey w3-border w3-xlarge">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

<p>w3-xxlarge:</p>
<div class="w3-bar w3-light-grey w3-border w3-xxlarge">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

<p>w3-xxxlarge:</p>
<div class="w3-bar w3-light-grey w3-border w3-xxxlarge">
  <a href="#" class="w3-bar-item w3-button w3-green"><i class="fa fa-home"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-search"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-envelope"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-globe"></i></a>
  <a href="#" class="w3-bar-item w3-button"><i class="fa fa-sign-in"></i></a>
</div>

</div>
</body>
</html>