WalkingSheep

Site URL: https://luyangzou.com/ Hi, I use CSS to move my main navigation at the centre of my page. #navigator header#topBar ul#nav { display: block; float: none; text-align: center; padding: 10px 0 20px 0; margin: 0 0 0 75px; max-width: 100%; } but I want to hide my Navigation only on mobile device. How can I do that? Thanks.