Help with Centering

Good Day WordPress Guru’s,

At my site Moneypons.com the border seems to have stretched out on the right side of the white wallpaper border. I think the fix must be in the code below if someone in the know would take a look at it. Is it the padding differences ?

#content{background:#fff;border:10px solid #121827;font-family:’Myriad Pro’,Helvetica,Arial,sans-serif;text-align:justify;padding:20px 0 0;}
#content-left{float:left;width:850px;padding:15px;}
#content-right{float:right;width:320px;}