overflow:auto breaks layout in chrome and firefox - css

Question

Why is the overflow:auto; on .pageContent breaking the layout in Chrome and Firefox? It works great in Safari. How can I go about fixing it? I added it so the clear:both; on the h2 would only clear the content and not the whole .pageAttributes div too.
Here is the site.
It looks like its the border-bottom on .selected from the menu thats causing it. Still not sure why though.
Update - Test case jsfiddle
I've tried overflow: visible; but that breaks the h2.
HTML
<div class="page">
<div class="pageAttributes">
.pageAttributes
</div>
<div class="pageMenu">
<div class="button">View</div>
<div class="button selected">Edit</div>
<div class="button">Talk</div>
<div class="search">Search:
<input type="text" id="searchItem">
</div>
</div>
<div class="pageContent">
<h2>header</h2>
.pageContent
<div class="pageFooter"></div>
</div>
</div>
CSS
html, body {
width: 100%;
height: 100%;
margin: 0px;
padding: 0px;
}
.page {
width: 1010px;
padding: 0 5px 0 5px;
margin: 0 auto 30px auto;
}
.pageAttributes {
float: left;
width: 245px;
height: 250px;
margin-bottom: 20px;
background-color: #ccc;
}
.pageMenu {
clear: right;
margin-left: 250px;
height: 25px;
margin-bottom: -1px;
border-bottom: 1px solid #a7d7f9;
padding-left: 1px;
padding-right: 1px;
}
.pageMenu .button {
float: left;
margin-left: -1px;
height: 24px;
border-top: 1px solid #a7d7f9;
border-left: 1px solid #a7d7f9;
border-right: 1px solid #a7d7f9;
padding-left: 15px;
padding-right: 15px;
text-align: center;
line-height: 25px;
font-family: sans-serif;
font-size: 13px;
cursor: pointer;
}
.pageMenu .button.selected {
background-color: white;
border-bottom: 1px solid white;
cursor: default;
}
.pageMenu .search {
float: right;
margin-right: -1px;
height: 24px;
border-top: 1px solid #a7d7f9;
border-left: 1px solid #a7d7f9;
border-right: 1px solid #a7d7f9;
padding-left: 15px;
padding-right: 15px;
text-align: center;
line-height: 25px;
font-family: sans-serif;
font-size: 13px;
cursor: default;
}
.pageContent {
position: relative;
border: 1px solid #a7d7f9;
margin-bottom: 5px;
padding: 5px;
background-color: white;
line-height: 1.5em;
overflow: auto;
clear: right;
margin-left: 250px;
}
.pageContent h2 {
margin-top: 25px;
margin-bottom: 3px;
font-size: 16px;
border-bottom: 1px dotted #CCC;
clear: both;
}

Answer 1

Try this,
#articleSections{
float: left;
}
and remove the overflow: auto; from .pageContent

Answer 2

to me it seems to be a floating problem wich I could not clear between the .button(s) and the search input. so positioning could be a solution like this
fiddle http://jsfiddle.net/LNMH9/3/
<style type="text/css">
html, body {
width: 100%;
height: 100%;
margin: 0px;
padding: 0px;
}
.page {
position:relative;
width: 1010px;
padding: 0 5px 0 5px;
margin: 0 auto 30px auto;
}
.pageAttributes {
position:absolute;
left:0px;
top:0px;
width: 245px;
height: 250px;
margin-bottom: 20px;
background-color: #ccc;
}
.pageMenu {
margin-left: 250px;
height: 25px;
margin-bottom: -1px;
border-bottom: 1px solid #a7d7f9;
padding-left: 1px;
padding-right: 1px;
}
.pageMenu .button {
float: left;
margin-left: -1px;
height: 24px;
border-top: 1px solid #a7d7f9;
border-left: 1px solid #a7d7f9;
border-right: 1px solid #a7d7f9;
padding-left: 15px;
padding-right: 15px;
text-align: center;
line-height: 25px;
font-family: sans-serif;
font-size: 13px;
cursor: pointer;
}
.pageMenu .button.selected {
background-color: white;
border-bottom: 1px solid white;
cursor: default;
}
.pageMenu .search {
float: right;
margin-right: -1px;
height: 24px;
border-top: 1px solid #a7d7f9;
border-left: 1px solid #a7d7f9;
border-right: 1px solid #a7d7f9;
padding-left: 15px;
padding-right: 15px;
text-align: center;
line-height: 25px;
font-family: sans-serif;
font-size: 13px;
cursor: default;
}
.pageContent {
position: absolute;
width:748px;
border: 1px solid #a7d7f9;
margin-bottom: 5px;
padding: 5px;
background-color: white;
line-height: 1.5em;
overflow: auto;
clear: right;
margin-left: 250px;
}
.pageContent h2 {
margin-top: 25px;
margin-bottom: 3px;
font-size: 16px;
border-bottom: 1px dotted #CCC;
clear: both;
}
</style>
<div class="page">
<div class="pageAttributes">
.pageAttributes
</div>
<div class="pageMenu">
<div class="button">View</div>
<div class="button selected">Edit</div>
<div class="button">Talk</div>
<div class="search">Search:
<input type="text" id="searchItem" />
</div>
<div style="clear:both;"></div>
</div>
<div class="pageContent">
<h2>header</h2>
Lorem ipsum
<div class="pageFooter"></div>
</div>
</div>