abs-pos-non-replaced-vrl-006.xht (3898B)
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 'top', 'height' and 'bottom' are '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-006-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'ltr' and 'top', 'height' and 'bottom' are 'auto', then set 'top' to the static position, 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 html 20 { 21 writing-mode: vertical-rl; 22 } 23 24 div#containing-block 25 { 26 background: red url("support/bg-red-3col-3row-320x320.png"); 27 color: transparent; 28 direction: ltr; 29 font: 80px/1 Ahem; 30 height: 320px; 31 position: relative; 32 width: 320px; 33 } 34 35 div#containing-block > span 36 { 37 background-color: red; 38 bottom: auto; 39 color: green; 40 height: auto; 41 position: absolute; 42 top: auto; 43 } 44 45 /* 46 " 47 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. 48 " 49 7.1 Principles of Layout in Vertical Writing Modes 50 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 51 52 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. 53 54 " 55 If all three of 'left', 'width', and 'right' are 'auto': First set any 'auto' values for 'margin-left' and 'margin-right' to 0. Then, if the 'direction' property of the element establishing the static-position containing block is 'ltr' set 'left' to the static position and apply rule number three below; otherwise, set 'right' to the static position and apply rule number one below. 56 57 3. 'width' and 'right' are 'auto' and 'left' is not 'auto', then the width is shrink-to-fit . Then solve for 'right' 58 " 59 60 'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block 61 62 So: 63 64 160px : top: auto: set to static position 65 + 66 0px : margin-top 67 + 68 0px : border-top-width 69 + 70 0px : padding-top 71 + 72 (based on the content) : height: auto 73 + 74 0px : padding-bottom 75 + 76 0px : border-bottom-width 77 + 78 0px : margin-bottom 79 + 80 (solve) : bottom: auto 81 ===================== 82 320px : height of containing block 83 84 gives us: 85 86 160px : top: auto: set to static position 87 + 88 0px : margin-top 89 + 90 0px : border-top-width 91 + 92 0px : padding-top 93 + 94 80px : (based on the content) : height: auto 95 + 96 0px : padding-bottom 97 + 98 0px : border-bottom-width 99 + 100 0px : margin-bottom 101 + 102 (solve) : bottom: auto 103 ===================== 104 320px : height of containing block 105 106 And so computed bottom value must be 80px . 107 */ 108 109 ]]></style> 110 111 </head> 112 113 <body> 114 115 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 116 117 <div id="containing-block">1 2 34<span>X</span></div> 118 119 </body> 120 </html>