Expanding a parent <div> to the height of its children
I have a page structure similar to this:
<body>
  <div id="parent">
    <div id="childRightCol">
      /*Content*/
    </div>
    <div id="childLeftCol">
      /*Content*/
    </div>
  </div>
</body>
 I would like for the parent div to expand in height when the inner div 's height increases.  
 Edit:  
 One problem is that if the width of the child content expands past the width of the browser window, my current CSS puts a horizontal scrollbar on the parent div .  I would like the scrollbar to be at the page level.  Currently my parent div is set to overflow: auto;  
Can you please help me with the CSS for this?
Try this for the parent, it worked for me.
overflow:auto; 
UPDATE:
One more solution that worked:
Parent :
display: table;
Child :
display: table-row;
 add a clear:both .  assuming that your columns are floating.  Depending on how your height is specified parent you may need an overflow:auto;  
<body>
<div id="parent">
    <div id="childRightCol">
    <div>
    <div id="childLeftCol">
    <div>
    <div id="clear" style="clear:both;"></div>
</div>
</body>
As Jens said in comment
An alternative answer is How to make div not larger than its contents?… and it proposes to set display:inline-block. Which worked great for me. – Jens Jun 2 at 5:41
This works far better for me in all browsers.
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