Overflow issues (ad cut off)

• Explanation
  The ad looks cut off when it's expanded because the site applied the CSS style overflow:hidden; attribute to the <div> tag that contains the ad.
   
• Symptoms  
  The ad may not be able to expand, so it looks cut off when it tries to expand out of the ad slot.
   
• How do I know if this is my issue?
  Use a browser’s developer tool, such as Firebug for Firefox, to check the style attributes of the <div> tag containing the ad and the subsequent <div>s above to see if you can find the overflow:hidden; attribute. The developer tool lets you test if changing the attribute of the <div> of the ad from overflow:hidden; to overflow:visible; resolves the issue.
   
• How can I avoid this?
  • If you're a site publisher that hosts expanding ads on your site, make sure the <div>s containing these ads don't have style attributes of overflow:hidden; applied to them. If they do, then change overflow:hidden; style attributes to overflow:visible;
  • If you're an agency or advertiser, check with the sites hosting your expandable ad to make sure they don't have overflow:hidden; style attributes in the <div> that your ad will be contained in. If the site is unwilling to make this site-side change, see Potential problems with the CSS Overflow: hidden; property.
     
• How do I troubleshoot this?
  Check out these Expanding troubleshooters:
  • An expanding ad unit is not expanding out of placement and/or over page content.
  • An ad unit is expanding underneath another ad unit.
  • Site navigation drop-down menus are expanding under my rich media.
  • Push-down unit is expanding over the page, rather than pushing down site content.