[Webkit-unassigned] [Bug 245156] Align "UA" stylesheet for "hr", "fieldset", "marquee", "details" etc. with HTML Spec

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245156

Karl Dubost <karlcow at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |BrowserCompat
                 CC|                            |karlcow at apple.com

--- Comment #1 from Karl Dubost <karlcow at apple.com> ---
For reference

=================================
WebKit
https://searchfox.org/wubkat/source/Source/WebCore/css/html.css

marquee {
    display: inline-block;
}

hr {
    display: block;
    margin-block-start: 0.5em;
    margin-block-end: 0.5em;
    margin-inline-start: auto;
    margin-inline-end: auto;
    border-style: inset;
    border-width: 1px;
}

fieldset {
    display: block;
    margin-inline-start: 2px;
    margin-inline-end: 2px;
    padding-block-start: 0.35em;
    padding-inline-start: 0.75em;
    padding-inline-end: 0.75em;
    padding-block-end: 0.625em;
    border: 2px groove ThreeDFace;
    min-width: min-content;
}


=================================
Blink
https://github.com/chromium/chromium/blob/main/third_party/blink/renderer/core/html/resources/html.css

marquee {
    display: inline-block;
    width: -webkit-fill-available;
}

hr {
    display: block;
    overflow: hidden;
    unicode-bidi: isolate;
    margin-block-start: 0.5em;
    margin-block-end: 0.5em;
    margin-inline-start: auto;
    margin-inline-end: auto;
    border-style: inset;
    border-width: 1px
}

fieldset {
    display: block;
    margin-inline-start: 2px;
    margin-inline-end: 2px;
    padding-block-start: 0.35em;
    padding-inline-start: 0.75em;
    padding-inline-end: 0.75em;
    padding-block-end: 0.625em;
    border: 2px groove #C0C0C0;
    min-inline-size: min-content;
}


=================================
Gecko 
https://searchfox.org/mozilla-central/source/layout/style/res/html.css

marquee {
  inline-size: -moz-available;
  display: inline-block;
  vertical-align: text-bottom;
  text-align: start;
}

marquee:is([direction="up"], [direction="down"]) {
  block-size: 200px;
}

/* <hr> noshade and color attributes are handled completely by
 * HTMLHRElement::MapAttributesIntoRule.
 * https://html.spec.whatwg.org/#the-hr-element-2
 */
hr {
  color: gray;
  border-width: 1px;
  border-style: inset;
  margin-block-start: 0.5em;
  margin-block-end: 0.5em;
  margin-inline-start: auto;
  margin-inline-end: auto;
  overflow: hidden;

  /* FIXME: This is not really per spec */
  display: block;
}

hr[size="1"] {
  border-style: solid none none none;
}


For details and summary it will be slightly complex, because there are specific behaviors associated to this. See Bug 157323

I have the feeling that would be probably addressing each of them separately instead of one single PR.

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