163401 - Marquee should be a block-level element in html.css

Status: VERIFIED DUPLICATE of bug 163031

(Core :: Layout, defect)

Description

[Bamm Gabriana]

I am attaching two test cases illustrating why marquee should explicitly be
defined as block in html.css.

In the first test case, the top bar uses marquee while the lower bar uses an
ordinary div. Both are given gray backgrounds, and both are enclosed in a div
with a red background.

The expected result is that no red should be seen. This is because the inner
block fills in the outer block. The actual result is the marquee bar appears as
red, while the div bar appears correctly as gray.

Because marquee is block-level, it should also be gray.

The second test case is exactly the same as the first, but this time I added
a stylesheet:

  marquee {
    display: block;
  }

The top bar now appears correctly as gray.

Comment 1

[Bamm Gabriana]

Attachment: Test Case 1. Marquee shows container's red background instead of gray.

Comment 2

[Bamm Gabriana]

Attachment: Test Case 1. Adding display: block corrects the situation.

Comment 3

[Bamm Gabriana]

Suggested fix:

In RCS file: /cvsroot/mozilla/layout/html/document/src/html.css,v
we need to make the following changes:

 marquee {
+  display: block;
   -moz-binding:
url('chrome://xbl-marquee/content/xbl-marquee.xml#marquee-horizontal');
 }

Comment 4

[Mats Palmgren (inactive)]

*** This bug has been marked as a duplicate of 163031 ***

Comment 5

[Bamm Gabriana]

Verified.