'clear' and clearance

Hi,
Is "clearance" when a clear actually takes effect or is it that the
'clear' property is defined to left, right or both?

In other words, should the margins in the following case collapse or 
not?

<div style="margin-bottom: 0.5em">-</div>
<div style="margin-top: 0.5em; clear: both">-</div>

compared to:

<div>-</div>
<div style="float: right; width: 0.5em; height: 0.5em">&nbsp;</div>
<div style="margin-top: 0.5em; clear: both">-</div>

 /Staffan

Received on Wednesday, 10 August 2005 16:31:20 UTC