Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: firefox (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1075461
Title:
Wrong conversion em -> px for font-size < 10 px
Status in “firefox” package in Ubuntu:
Confirmed
Bug description:
When using em for dimensions (height, width, etc.) other than font-
size, the dimensions are not calculated correctly if the font-size is
< 10px.
Example:
<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="utf-8">
<title>em | px bug Firefox Ubuntu</title>
<style type="text/css">
div {
background-color: #EE0000;
display: block;
margin-bottom: 10px;
}
div._24px {
font-size: 24px;
height: 5em;
width: 5em;
}
div._12px {
font-size: 12px;
height: 10em;
width: 10em;
}
div._10px {
font-size: 10px;
height: 12em;
width: 12em;
}
div._8px {
font-size: 8px;
height: 15em;
width: 15em;
}
div._6px {
font-size: 6px;
height: 20em;
width: 20em;
}
</style>
</head>
<body>
<div class="_24px">
</div>
<div class="_12px">
</div>
<div class="_10px">
</div>
<div class="_8px">
</div>
<div class="_6px">
</div>
</body>
</html>
All the divs should have exactly the same dimensions, which in not the
case in Firefox 10.0.2: div._8px and div._6px are too big, their
height and width is calculated based on a font size of 10px.
Release: Ubuntu 12.04.1 LTS
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