font awesome for icon code example
Example 1: font awesome icons
<link rel="stylesheet" href="path/to/font-awesome/css/font-awesome.min.css">
Example 2: fontawesome icons for html
<i class="fas fa-camera"></i> <!-- this icon's 1) style prefix == fas and 2) icon name == camera -->
<i class="fas fa-camera"></i> <!-- using an <i> element to reference the icon -->
<span class="fas fa-camera"></span> <!-- using a <span> element to reference the icon -->