https://github.com/web-platform-tests/wpt
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Tip revision: 0fb07a85b24f196a8c179d8d85c287ba3ef8cb47 authored by Raymond Toy on 15 March 2018, 18:45:23 UTC
Implement tail processing for AudioNodes
Tip revision: 0fb07a8
abs-pos-non-replaced-vrl-028.xht
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title>CSS Writing Modes Test: absolutely positioned non-replaced element - 'direction: ltr' and 'left' and 'right' are 'auto' and 'width' is not 'auto'</title>

  <link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <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" />
  <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" />
  <link rel="match" href="abs-pos-non-replaced-vrl-004-ref.xht" />

  <meta name="flags" content="ahem image" />
  <meta name="assert" content="When 'direction' is 'ltr' and 'left' and 'right' are 'auto' and 'width' is not 'auto', then set 'left' to the static position and then solve for 'right'." />

  <style type="text/css"><![CDATA[
  div#containing-block
    {
      background: red url("support/bg-red-3col-2row-320x320.png");
      color: transparent;
      direction: ltr;
      font: 80px/1 Ahem;
      height: 320px;
      position: relative;
      width: 320px;
    }

  div#containing-block > span
    {
      background-color: red;
      color: green;
      left: auto;
      position: absolute;
      right: auto;
      width: 1em;
      writing-mode: vertical-rl;
    }

/*
"
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').
"

'left' + 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' + 'right' = width of containing block

So:

    160px : left: auto: set to static position
  +
      0px : margin-left
  +
      0px : border-left-width
  +
      0px : padding-left
  +
     80px : width
  +
      0px : padding-right
  +
      0px : border-right-width
  +
      0px : margin-right
  +
  (solve) : right: auto
    =====================
    320px : width of containing block

gives us:

    160px : left: auto: set to static position
  +
      0px : margin-left
  +
      0px : border-left-width
  +
      0px : padding-left
  +
     80px : width
  +
      0px : padding-right
  +
      0px : border-right-width
  +
      0px : margin-right
  +
  (solve) : right: auto
    =====================
    320px : width of containing block

And so computed right value must be 80px .
*/

  ]]></style>

 </head>

 <body>

  <p><img src="support/pass-cdts-abs-pos-non-replaced.png" width="246" height="36" alt="Image download support must be enabled" /></p>

  <div id="containing-block">1 2 34<span>X</span></div>

 </body>
</html>
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