Text getting cut off/clipped

Hi,

Last week, I followed some instructions online to remove the extra white space on the side of my website (www.sharpfluff.com) and now the text is clipping/being cut off on the right hand side, of all the 1-column pages. E.g. go to “about us”

I am using a child theme of Twenty Ten.

Could someone please help suggest the best way to fix it?

Is it here:

#content {
margin: 0 280px 0 50px;

Thanks in advance for your help. This forum has been very useful since starting up.