Created
May 3, 2011 05:43
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A simple CSS trick to create a horizontally- or vertically-centered 'selected' callout triangle using zero images.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style> | |
| body { | |
| margin: 40px; | |
| } | |
| a { | |
| display: inline-block; | |
| height: 24px; | |
| font-size: 24px; | |
| line-height: 24px; | |
| text-align: center; | |
| font-family: helvetica, sans-serif; | |
| text-decoration: none; | |
| color: #000; | |
| padding: 20px 60px; | |
| background-color: #ddd; | |
| margin-right: 2px; | |
| position: relative; | |
| } | |
| a:target { | |
| background-color: #333; | |
| color: #fff; | |
| } | |
| a:target:before, | |
| a:target:after { | |
| position: absolute; | |
| border: 10px solid transparent; | |
| bottom: 0; | |
| display: block; | |
| border-bottom: 10px solid #fff; | |
| content: ''; | |
| line-height: 0; | |
| } | |
| a:target:before { | |
| right: 50%; | |
| border-right: 0; | |
| } | |
| a:target:after { | |
| left: 50%; | |
| border-left: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <a href="#foo" id="foo">foo</a> | |
| <a href="#bar" id="bar">bar</a> | |
| <a href="#baz" id="baz">baz</a> | |
| </body> | |
| </html> |
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@romannurik: Yes, I know you did - but I didn't :D
Take a look at my gist fork; it uses negative margin to compensate the centering.