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How to slide down a navigation bar on scroll with CSS and JavaScript?
Following is the code to slide down a navigation bar when scrolling using CSS −
Example
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <style> body{ margin:0px; margin-top:60px; padding: 0px; } nav{ position: fixed; top: -50px; width: 100%; background-color: rgb(39, 39, 39); overflow: auto; height: auto; transition: 0.5s; } .links { display: inline-block; text-align: center; padding: 14px; color: rgb(178, 137, 253); text-decoration: none; font-size: 17px; } .links:hover { background-color: rgb(100, 100, 100); } .selected{ background-color: rgb(0, 18, 43); } .sample-content{ height: 150vh; } </style> </head> <body> <nav> <a class="links selected" href="#"> Home</a> <a class="links" href="#"> Login</a> <a class="links" href="#"> Register</a> <a class="links" href="#"> Contact Us</a> <a class="links" href="#">More Info</a> </nav> <div class="sample-content"> <h1>Here are some headers</h1> <h2>Here are some headers</h2> <h3>Here are some headers</h3> <h4>Here are some headers</h4> <h1>Here are some headers</h1> <h2>Here are some headers</h2> <h3>Here are some headers</h3> <h4>Here are some headers</h4> </div> <script> window.onscroll = scrollShowNav; function scrollShowNav() { if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) { document.getElementsByTagName("nav")[0].style.top = "0"; } else { document.getElementsByTagName("nav")[0].style.top = "-50px"; } } </script> </body> </html>
Output
The above code will produce the following output −
On scrolling the page the navbar will slide from the top like in below output −
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