abs-pos-non-replaced-vrl-158.xht (3181B)
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: rtl' and 'left' and 'width' are 'auto' and 'right' 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-height" title="10.6.4 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 'rtl' and 'left' and 'width' are 'auto' and 'right' is not 'auto' and 'writing-mode' is 'vertical-rl', then the width is based on the content and then solve for 'left'." /> 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: rtl; 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 color: green; 35 left: auto; 36 position: absolute; 37 right: 1em; 38 width: auto; 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, *right and *left properties are input into the §10.6.4 algorithms where *right properties refer to *top properties in the layout rules and where *left properties refer to *bottom properties in the layout rules. 49 50 " 51 3. 'height' and 'bottom' are 'auto' and 'top' is not 'auto', then the height is based on the content per 10.6.7, set 'auto' values for 'margin-top' and 'margin-bottom' to 0, and solve for 'bottom' 52 " 53 54 'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block 55 56 So: 57 58 80px : right 59 + 60 0px : margin-right 61 + 62 0px : border-right-width 63 + 64 0px : padding-right 65 + 66 80px : (based on the content) : width: auto 67 + 68 0px : padding-left 69 + 70 0px : border-left-width 71 + 72 0px : margin-left 73 + 74 (solve) : left: auto 75 ===================== 76 320px : width of containing block 77 78 And so computed left value must be 160px . 79 */ 80 81 ]]></style> 82 83 </head> 84 85 <body> 86 87 <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p> 88 89 <div id="containing-block">1 2 34<span>X</span></div> 90 91 </body> 92 </html>