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| 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/st
rict.dtd"> | |
| 2 <html> | |
| 3 | |
| 4 <head> | |
| 5 | |
| 6 <title>CSS Test: Margin collapsing - margins of a 'collapsed through' box with
out clearance can collapse with parent block's bottom margin</title> | |
| 7 | |
| 8 <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins"
> | |
| 9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserB
ugsSection/css21testsuite/"> | |
| 10 <link rel="author" title="Daniel Schattenkirchner" href="crazy-daniel{at}gmx.d
e"> | |
| 11 <link rel="match" href="margin-collapse-clear-017-ref.htm"> | |
| 12 | |
| 13 <meta content="An element that does not have clearance applied to it can colla
pse its top margin with its parent block's bottom margin. Margins of a 'collapse
d through' box without clearance applied to it can collapse with its parent bloc
k's bottom margin. An element with 'clear' set to a value other than 'none' can
create a clearance only if and only when there is an earlier (in the source docu
ment) floating box." name="assert"> | |
| 14 <meta content="image" name="flags"> | |
| 15 | |
| 16 <style type="text/css"> | |
| 17 body | |
| 18 { | |
| 19 background: white url("support/ruler-v-100px-200px-300px.png") no-repeat; | |
| 20 margin: 34px 8px 8px 55px; | |
| 21 /* | |
| 22 34px : body's top margin collapsing with p's top margin: max(34px, 16px) | |
| 23 + 20px : p's 1st line box height | |
| 24 + 20px : p's 2nd line box height | |
| 25 + 16px : p's bottom margin | |
| 26 + 10px : height of topmost green bar | |
| 27 ====== | |
| 28 100px | |
| 29 */ | |
| 30 } | |
| 31 | |
| 32 p | |
| 33 { | |
| 34 font-size: 16px; | |
| 35 line-height: 20px; | |
| 36 margin: 1em 8px; | |
| 37 } | |
| 38 | |
| 39 div#parent-block {margin-bottom: 100px;} | |
| 40 | |
| 41 div.vertical-gap-separator | |
| 42 { | |
| 43 background-color: green; | |
| 44 height: 10px; | |
| 45 } | |
| 46 | |
| 47 div#element-without-clearance | |
| 48 { | |
| 49 clear: both; | |
| 50 margin-top: 100px; | |
| 51 } | |
| 52 | |
| 53 /* | |
| 54 In this test, div#element-without-clearance | |
| 55 is what the spec refers to as | |
| 56 'collapsed through' box | |
| 57 http://www.w3.org/TR/CSS21/box.html#collapsed-through | |
| 58 */ | |
| 59 </style> | |
| 60 | |
| 61 </head> | |
| 62 | |
| 63 <body> | |
| 64 | |
| 65 <p>Test passes if there is a vertical gap<br> | |
| 66 of exactly 100px between 2 green bars.</p> | |
| 67 | |
| 68 <div id="parent-block"> | |
| 69 <div class="vertical-gap-separator"></div> | |
| 70 <div id="element-without-clearance"></div> | |
| 71 </div> | |
| 72 | |
| 73 <div class="vertical-gap-separator"></div> | |
| 74 | |
| 75 <!-- | |
| 76 div#element-without-clearance's margin-top should collapse | |
| 77 with #parent-block's margin-bottom: max(100px, 100px) = 100px | |
| 78 --> | |
| 79 | |
| 80 </body> | |
| 81 </html> | |
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Chromium Code Reviews
Issue 2827713002:
Delete duplicated LayoutTests from css2.1/20110323 (Closed)
