We are using Twenty Thirteen, the theme that came with WordPress. This is a Wordpress blog embedded in a Joomla site, where the blog is located here:
The person that is doing this isn't a designer, they would like an easy way to make this blog look good in mobile devices. The desired look would be for it to show up full screen on a mobile browser just like the home page
All of his other sites show up fine, it seems to be a limitation in the Twenty Thirteen theme.
Is there a way to alter the theme CSS/HTML to make this blog look good? An example of one of our other sites that is working just fine is www.thewealthymind.com
(though that site has a flash slideshow - but other than that that's how it should look - full screen)
The person isn't a designer and has put a lot of work in the blog, so he's looking for an easy solution, so please don't ask him to start from scratch on a different theme unless there's no other way.