Created
May 7, 2015 16:23
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Vertical Centering
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| <!doctype html> | |
| <html class="no-js" lang=""> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Vertical centering - 3WA</title> | |
| <style> | |
| /* border box ftw*/ | |
| *, *::before, *::after { | |
| -webkit-box-sizing: border-box; | |
| -moz-box-sizing: border-box; | |
| box-sizing: border-box; | |
| } | |
| html, body { | |
| /* le html & le body prennent la totalité de la hauteur dispo dans le navigateur */ | |
| height: 100%; | |
| /* reset padding/margin */ | |
| margin: 0; | |
| padding: 0; | |
| } | |
| body { | |
| background: #eee; | |
| color: #111; | |
| padding: 3em; | |
| } | |
| main { | |
| display: block; | |
| background: #fff; | |
| /* devient un referenciel pour des enfant en position:abolute */ | |
| position: relative; | |
| /* fait *au-moins* la hauteur du parent */ | |
| min-height: 100%; | |
| } | |
| main > div { | |
| background: #999; | |
| /* | |
| position:absolute + top/left/right/bottom:0 => l'element (ici le div) prend l'intégralité du parent (ici le main) | |
| */ | |
| position: absolute; | |
| top: 0; | |
| bottom: 0; | |
| left: 0; | |
| right: 0; | |
| /* dimensions (relative au parent) */ | |
| width: 50%; | |
| height: 50%; | |
| /* centrage automatique vertical et horizontal */ | |
| margin: auto; | |
| /* dimensions minimales */ | |
| min-width: 15em; | |
| min-height: 10em; | |
| } | |
| /** Debug **/ | |
| body::before, | |
| main::before, | |
| main > div::before { | |
| content:"<body>"; | |
| position: absolute; | |
| display: block; | |
| top: 2px;left: 2px; | |
| } | |
| body::before {content:"<body>";} | |
| main::before {content:"<main>";} | |
| main > div::before {content:"<div>";} | |
| </style> | |
| </head> | |
| <body> | |
| <main> | |
| <div></div> | |
| </main> | |
| </body> | |
| </html> |
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