It's hard to work with iframes like this. You could try changing the widths in your HTML:
Code:
<ins style="display:inline-table;border:none;height:250px;margin:0;padding:0;position:relative;visibility:visible;width:300px">
<ins id="aswift_0_anchor" style="display:block;border:none;height:250px;margin:0;padding:0;position:relative;visibility:visible;width:300px">
<iframe allowtransparency="true" frameborder="0" height="250" hspace="0" marginwidth="0" marginheight="0" onload="var i=this.id,s=window.google_iframe_oncopy,H=s&&s.handlers,h=H&&H[i],w=this.contentWindow,d;try{d=w.document}catch(e){}if(h&&d&&(!d.body||!d.body.firstChild)){if(h.call){i+='.call';setTimeout(h,0)}else if(h.match){i+='.nav';w.location.replace(h)}s.log&&s.log.push(i)}" scrolling="no" vspace="0" width="300" id="aswift_0" name="aswift_0" style="left:0;position:absolute;top:0;"></iframe></ins></ins>
That 300 figure is too wide, so see if you can access it and make it something like 280.
Edit:
Victorinox has a much better suggestion below.
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