Open Bug 430360 Opened 16 years ago Updated 2 years ago

CSS background-color is 1px too low

Categories

(Core :: Web Painting, defect)

Product:
Core
Component:
Web Painting
Platform:
x86
Windows XP
Type:
defect

Tracking

()

People

(Reporter: nightstalkerz, Unassigned)

Details

Attachments

(1 file)

testcase
548 bytes, text/html
Details 
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008042207 Minefield/3.0pre
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9pre) Gecko/2008042207 Minefield/3.0pre

If a div has a child element such as <a> and the background-color is set for the div and <a>, the background color will not appear on the top line of <a> leaving the colour of the div.
This works in Opera 9.5 and IE7.

Reproducible: Always

Steps to Reproduce:
1. Save the text below as a html document and open in Firefox.
Actual Results:  
background-color is 1px too short.

Expected Results:  
background-color is higher 1px.

Save this as an html document.



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
	<title>
		Contact
	</title>
	<style type="text/css">
		#menu
		{
			background-color: black;
			text-align: center;
			font-size: x-large;
		}

		#menu a
		{
			background-color: yellow;
		}
	</style>
</head>
<body>
	<div id="menu">
		<a href="Default">Home</a>
		<a href="Contact">Contact</a>
		<a href="About">About</a>
	</div>
</body>
</html>
Attached file testcase — 
There is a line above the 3 links which should be the same as the links background colour.
I can confirm I see the behavior. I believe this bug belongs in Product: core  with the Component being Layout: (view rendering?)
Component: General → Layout: View Rendering
Product: Firefox → Core
QA Contact: general → layout.view-rendering
I haven't looked at this myself, but confirming on the basis of Ryan's comment so this gets some attention.
Status: UNCONFIRMED → NEW
Ever confirmed: true
Component: Layout: View Rendering → Layout: Web Painting
Severity: normal → S3
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