<!DOCTYPE html> <html lang="en"> <head> <title>Unicorn Admin</title> <meta charset="UTF-8" /> <style type="text/css" media="screen"> .test{ width:100px; height: 100px; background-color: gray; } .test:after{ content: ""; display: block; width: 100%; height: 33.3%; border-top: 1px solid white; border-bottom: 1px solid white; margin-top: -66.6%; } .test:before{ content: ""; display: block; width: 33%; height: 100%; border-right: 2px solid white; } </style> </head> <body > <p> <p class="test"> </p> </p> </body> </html>
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