Re: css problem (float)

On Sep 6, 3:43 am, Ben C <spams...@xxxxxxxxx> wrote:
On 2007-09-05, Deephay <tudo...@xxxxxxxxx> wrote:

On Sep 5, 5:23 pm, Ben C <spams...@xxxxxxxxx> wrote:
[...]
I feel CSS behaves oddly in Firefox, according to CSS spec:

"The border box of a table, a block-level replaced element, or an
element in the normal flow that establishes a new block formatting
context (such as an element with 'overflow' other than 'visible') must
not overlap any floats in the same block formatting context as the
element itself."

But why does the middle column actually overlapped with them?

Because it doesn't establish a new block formatting context, it's just a
normal block-level element.

Only some block boxes start "block formatting contexts"-- floats, table
cells, positioned things, things with overflow other than visible.

You could actually use this to solve your problem, and I almost
suggested it the first time.

Note that this particular thing has only very recently been tightened up
in the CSS 2.1 spec. It used to say something like "browsers may make
block formatting context narrower when there are floats in the way".

Now it says "must" and is altogether clearer about the whole thing.

Try this, then try commenting out overflow: hidden and reloading:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/REC-html40/strict.dtd";>
<html>
<head>
<title>Test Page</title>
<style type="text/css">
div
{
border: 2px solid black;
}
.left
{
float: left;
background-color: pink;
width: 25%;
height: 300px;
}
.right
{
float: right;
background-color: palegreen;
width: 25%;
height: 300px;
}
.middle
{
overflow: hidden;
background-color: blue;
height: 400px;
}

</style>
</head>
<body>
<div class="left"></div>
<div class="right"></div>
<div class="middle"></div>
</body>
</html>

Hi Ben,

Thanks, I thought the initial value of overflow is not visible, but it
is. It is now matches my need (at least in Firefox).

Another thing:
I think Firefox does not handle CSS correctly, if you add a "width:
100%;" for the middle column, the
middle column will overlap with the right float, which is not correct
for that case since "overflow: hidden"
makes the middle column established a new block formatting context.

Cheers.

.

Relevant Pages

  • Re: css problem (float)
    ... element in the normal flow that establishes a new block formatting ... not overlap any floats in the same block formatting context as the ... cells, positioned things, things with overflow other than visible. ... block formatting context narrower when there are floats in the way". ...
    (alt.html)
  • Re: CSS liquid layout - cant achieve correct sizing
    ... It is a bit of a weird side-effect of overflow: ... dorayme has a webpage about containment of descendent floats with some ... It establishes a new block formatting context. ...
    (alt.html)
  • Re: Fraction>>asFloat (FloatingPoint Overflow)
    ... /3)asFloat should raise an overflow, ... (i mean it likely won't be the closest float to the fraction) ... newN:= numerator. ... newD:= denominator. ...
    (comp.lang.smalltalk.dolphin)
  • Re: Avoiding Overflow
    ... this is incorrect as the multiply will be calculated first and ... > are done on the FPU, which uses 10-byte floating point storage internally. ... > result stored back to the float / double type that we were using. ... the overflow would not occur when using float / double. ...
    (microsoft.public.vc.language)
  • Re: will a PCV breather filter cause gasoline to build up in the oil?
    ... I figured it could be a bad float valve but my carb has an overflow ... tube, wouldn't excess gasoline go out the tube instead of down the carb? ...
    (rec.motorcycles.tech)