abs-pos-non-replaced-vlr-031.xht (3306B)
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' and 'bottom' are 'auto' and 'height' 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-vlr-007-ref.xht" /> 13 14 <meta name="flags" content="ahem image" /> 15 <meta name="assert" content="When 'direction' is 'ltr' and 'top' and 'bottom' are 'auto' and 'height' is not 'auto', then set 'top' to static position and 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-lr; 22 } 23 24 div#containing-block 25 { 26 background: red url("support/bg-red-2col-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 36 div#containing-block > span 37 { 38 background-color: red; 39 bottom: auto; 40 color: green; 41 height: 1em; 42 position: absolute; 43 top: auto; 44 } 45 46 /* 47 " 48 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. 49 " 50 7.1 Principles of Layout in Vertical Writing Modes 51 http://www.w3.org/TR/css-writing-modes-3/#vertical-layout 52 53 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. 54 55 " 56 2. 'left' and 'right' are 'auto' and 'width' is not 'auto', then if the 'direction' property of the element establishing the static-position containing block is 'ltr' set 'left' to the static position, otherwise set 'right' to the static position. Then solve for 'left' (if 'direction is 'rtl') or 'right' (if 'direction' is 'ltr'). 57 " 58 59 'top' + 'margin-top' + 'border-top-width' + 'padding-top' + 'height' + 'padding-bottom' + 'border-bottom-width' + 'margin-bottom' + 'bottom' = height of containing block 60 61 So: 62 63 160px : top: auto: set to static position 64 + 65 0px : margin-top 66 + 67 0px : border-top-width 68 + 69 0px : padding-top 70 + 71 80px : height 72 + 73 0px : padding-bottom 74 + 75 0px : border-bottom-width 76 + 77 0px : margin-bottom 78 + 79 (solve) : bottom: auto 80 ===================== 81 320px : height of containing block 82 83 And so computed bottom value must be 80px . 84 */ 85 86 ]]></style> 87 88 </head> 89 90 <body> 91 92 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 93 94 <div id="containing-block">1 2 34<span>X</span></div> 95 96 </body> 97 </html>