Created
December 16, 2017 08:01
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CSS anonymous(匿名) boxes 影响元素显示
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Why two lines?</title> | |
| <link href='https://fonts.googleapis.com/css?family=Source+Sans+Pro' rel='stylesheet' type='text/css'> | |
| <style> | |
| * { | |
| box-sizing: border-box; | |
| font-family: 'Source Sans Pro', sans-serif; | |
| font-weight: bold; | |
| } | |
| .blue { | |
| background-color: #02b3e4; | |
| } | |
| .boxed { | |
| border: 2px solid #2e3d49; | |
| } | |
| .container { | |
| background-color: #dbe2e8; | |
| padding: 8px; | |
| } | |
| .child { | |
| display: inline-block; | |
| width: 50%; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <div class="blue boxed child">Child 1</div> | |
| <div class="blue boxed child">Child 2</div> | |
| </div> | |
| </body> | |
| </html> |
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html page
Reason
The whitespace between the two .child divs creates a new element.
Detail
Believe it or not, tabs, spaces and newlines in HTML can actually become elements! The resulting elements are called "anonymous boxes," which get created in a number of scenarios. This is just one example of an anonymous box. Usually, anonymous boxes from whitespace don't affect the way a page displays, but this is an example of where they do!