abs-pos-non-replaced-vrl-038.xht (3433B)
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 3 <html xmlns="http://www.w3.org/1999/xhtml"> 4 5 <head> 6 7 <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: ltr' and 'height' and 'bottom' are 'auto' and 'top' is not 'auto'</title> 8 9 <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> 10 <link rel="help" href="http://www.w3.org/TR/css-writing-modes-3/#vertical-layout" title="7.1 Principles of Layout in Vertical Writing Modes" /> 11 <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width" title="10.3.7 Absolutely positioned, non-replaced elements" /> 12 <link rel="match" href="abs-pos-non-replaced-vrl-004-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'ltr' and 'height' and 'bottom' are 'auto' and 'top' is not 'auto', then the height is based on the content and then solve for 'bottom'." /> 16 17 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> 18 <style type="text/css"><![CDATA[ 19 div#containing-block 20 { 21 background: red url("support/bg-red-3col-2row-320x320.png"); 22 color: transparent; 23 direction: ltr; 24 font: 80px/1 Ahem; 25 height: 320px; 26 position: relative; 27 width: 320px; 28 writing-mode: vertical-rl; 29 } 30 31 div#containing-block > span 32 { 33 background-color: red; 34 bottom: auto; 35 color: green; 36 height: auto; 37 position: absolute; 38 top: 1em; 39 } 40 41 /* 42 " 43 Layout calculation rules (such as those in CSS2.1, Section 10.3) that apply to the horizontal dimension in horizontal writing modes instead apply to the vertical dimension in vertical writing modes. 44 " 45 7.1 Principles of Layout in Vertical Writing Modes 46 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 47 48 So here, *-top and *-bottom properties are input into the §10.3.7 algorithms where *-top properties refer to *-left properties in the layout rules and where *-bottom properties refer to *-right properties in the layout rules. 49 50 " 51 3. 'width' and 'right' are 'auto' and 'left' is not 'auto', then the width is shrink-to-fit . Then solve for 'right' 52 " 53 54 'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block 55 56 So: 57 58 80px : top 59 + 60 0px : margin-top 61 + 62 0px : border-top-width 63 + 64 0px : padding-top 65 + 66 (based on the content) : height: auto 67 + 68 0px : padding-bottom 69 + 70 0px : border-bottom-width 71 + 72 0px : margin-bottom 73 + 74 (solve) : bottom: auto 75 ===================== 76 320px : height of containing block 77 78 gives us: 79 80 80px : top 81 + 82 0px : margin-top 83 + 84 0px : border-top-width 85 + 86 0px : padding-top 87 + 88 80px : (based on the content) : height: auto 89 + 90 0px : padding-bottom 91 + 92 0px : border-bottom-width 93 + 94 0px : margin-bottom 95 + 96 (solve) : bottom: auto 97 ===================== 98 320px : height of containing block 99 100 And so computed bottom value must be 160px . 101 */ 102 103 ]]></style> 104 105 </head> 106 107 <body> 108 109 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 110 111 <div id="containing-block">1 2 34<span>X</span></div> 112 113 </body> 114 </html>