[CSS] background image disappears in Firefox when "float:" is used

T

Tomasz Chmielewski

I have a problem with CSS. Generally, my site looked good in Firefox and
IE7, but then, I wanted to see how it looks in IE6 (which still has over
30% of the market) - the result wasn't that great, the page looked ugly.

So I made various changes, and now the page looks good in IE6 and IE7.
In Firefox however, a background image is not displayed when I add a
"float" element to CSS. Where is the problem?


An example code is here:

http://wpkg.org/cssproblem.html


Expected result: "left column" and "right" column" written on respective
parts of the image. The image is available here: http://wpkg.org/sub2_bg.png

Result: IE6, IE7 - OK
Firefox - image is not displayed

When "float:left;" is commented out in #left_column, the image is
displayed in Firefox (but then, the text in the columns is messed).


<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="content-type">
<title>sometitle</title>
<style type="text/css">
#wrapper {
clear: both;
width:100%;
background-image: url(sub2_bg.png);
background-repeat: repeat-y;

}

#left_column {
width:607px;
float:left;
}

#right_column {
width:349px;
float:left;
}


..padding {
padding-left: 40px;
text-align:left;
}

</style>
</head>

<body>
<div id="wrapper">

<div id="left_column">
<div class="padding">
left column
</div>
</div>

<div id="right_column">
<div class="padding">
right column
</div>
</div>

</div>

</body>
</html>
 
B

Ben C

I have a problem with CSS. Generally, my site looked good in Firefox and
IE7, but then, I wanted to see how it looks in IE6 (which still has over
30% of the market) - the result wasn't that great, the page looked ugly.

So I made various changes, and now the page looks good in IE6 and IE7.
In Firefox however, a background image is not displayed when I add a
"float" element to CSS. Where is the problem?


An example code is here:

http://wpkg.org/cssproblem.html


Expected result: "left column" and "right" column" written on respective
parts of the image. The image is available here: http://wpkg.org/sub2_bg.png

Result: IE6, IE7 - OK
Firefox - image is not displayed

When "float:left;" is commented out in #left_column, the image is
displayed in Firefox (but then, the text in the columns is messed).

It's because your containing div has zero height, because it doesn't
have any contents, except for floats, which don't count.

IE is getting this wrong.

Give #wrapper overflow: hidden and it will grow to the height of the
floats and you will see your background images.

And get rid of width:100% on #wrapper, it's pointless (unless it's for
some weird IE bug I don't know about).
 
T

Tomasz Chmielewski

Ben C schrieb:

(...)
It's because your containing div has zero height, because it doesn't
have any contents, except for floats, which don't count.

IE is getting this wrong.

Give #wrapper overflow: hidden and it will grow to the height of the
floats and you will see your background images.

And get rid of width:100% on #wrapper, it's pointless (unless it's for
some weird IE bug I don't know about).

Indeed, I needed "overflow: hidden" - thanks a lot.
 
G

GTalbot

I have a problem with CSS. Generally, my site looked good in Firefox and
IE7, but then, I wanted to see how it looks in IE6 (which still has over
30% of the market) - the result wasn't that great, the page looked ugly.

So I made various changes, and now the page looks good in IE6 and IE7.
In Firefox however, a background image is not displayed when I add a
"float" element to CSS. Where is the problem?

An example code is here:

http://wpkg.org/cssproblem.html

Expected result: "left column" and "right" column" written on respective
parts of the image. The image is available here:http://wpkg.org/sub2_bg.png

[snipped]

<style type="text/css">
#wrapper {
clear: both;
width:100%;
background-image: url(sub2_bg.png);
background-repeat: repeat-y;

}
[snipped]


Tomasz,

Ben C is right: just get rid of the width: 100% on the div#wrapper:
width: 100% is an useless and pointless declaration in your
stylesheet.

Gérard
 
T

Tomasz Chmielewski

GTalbot said:
I have a problem with CSS. Generally, my site looked good in Firefox and
IE7, but then, I wanted to see how it looks in IE6 (which still has over
30% of the market) - the result wasn't that great, the page looked ugly.

So I made various changes, and now the page looks good in IE6 and IE7.
In Firefox however, a background image is not displayed when I add a
"float" element to CSS. Where is the problem?

An example code is here:

http://wpkg.org/cssproblem.html

Expected result: "left column" and "right" column" written on respective
parts of the image. The image is available here:http://wpkg.org/sub2_bg.png

[snipped]

<style type="text/css">
#wrapper {
clear: both;
width:100%;
background-image: url(sub2_bg.png);
background-repeat: repeat-y;

}
[snipped]


Tomasz,

Ben C is right: just get rid of the width: 100% on the div#wrapper:
width: 100% is an useless and pointless declaration in your
stylesheet.

It's not useless - it is a workaround for a IE6 bug - without it, IE6
won't show the background image.
 
Joined
Jan 5, 2010
Messages
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Tomasz is right. The height property has to be set in order for IE6 to show image.

I had dissapering text problem in IE6 when floating divs, but i fixed it by setting my container to height:1%
 

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