HTML
<div class="topnav"><a href="#home" class="active">Logo</a><div id="mobile-nav-links"><a href="#news">News</a><a href="#contact">Contact</a><a href="#about">About</a></div><a href="javascript:void(0);" class="icon" onclick="myFunction()"><i class="fa fa-bars"></i></a></div>
CSS
.mobile-container {max-width: 480px;margin: auto;background-color: #555;height: 500px;color: white;border-radius: 10px;}.topnav {overflow: hidden;background-color: #333;position: relative;}.topnav #mobile-nav-links {display: none;}.topnav a {color: white;padding: 14px 16px;text-decoration: none;font-size: 17px;display: block;}.topnav a.icon {background: black;display: block;position: absolute;right: 0;top: 0;}.topnav a:hover {background-color: #ddd;color: black;}.active {background-color: #4CAF50;color: white;}
Javascript
function myFunction() {var x = document.getElementById("mobile-nav-links");if (x.style.display === "block") {x.style.display = "none";} else {x.style.display = "block";}}
Fatal error: Uncaught Error: Call to undefined function seo_url() in /home/sabalico/public_html/blueprint/pages/documentation.php:186Stack trace:#0 /home/sabalico/public_html/index.php(86): include()#1 {main} thrown in /home/sabalico/public_html/blueprint/pages/documentation.php on line 186