来自codepen http://codepen.io/mouradhamoud/pen/RRvVZp
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> body { background-color: #444; } .menu { background-color: #FF8800; list-style: none; padding: 0px; margin: 0 auto; width: 100%; text-align: center; } .menu li { display: inline-block; } .menu li a { color: transparent; padding: 10px 20px; margin: 0px; display: inline-block; font-family: 'Lato', sans-serif; font-size: 18px; text-decoration: none; text-transform: uppercase; background-color: #FF8800; position: relative; overflow: hidden; } .menu li a::before { content: attr(data-title); display: block; padding: 10px 20px; position: absolute; top: 0%; left: 0px; color: #FFF; transition: all 0.5s; } .menu li a::after { content: attr(data-title); display: block; padding: 10px 20px; position: absolute; top: 100%; left: 0px; color: #FFF; font-weight: bold; font-size: 19px; transition: all 0.5s; } .menu li a:hover::before { top: -100%; } .menu li a:hover::after { top: 0%; } </style> </head> <body> <ul class="menu"> <li><a href="#" data-title="Home">Home</a></li> <li><a href="#" data-title="Features">Features</a></li> <li><a href="#" data-title="Pricing">Pricing</a></li> <li><a href="#" data-title="Contact">Contact</a></li> </ul> </body> </html>