Modify font size in body of Wordpress pages

I'm new to WordPress and am playing with the eSell theme.  But the text in the body of the pages and posts is too small for my liking.  Anybody available to provide a recommendation for changing the CSS code to a larger font size.  (I know nothing about HTML and CSS).

My site is here:
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Dale FyeOwner, Developing Solutions LLCAsked:
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#pagecont, #content { font-size: 16px; }

Adjust the 16 to the size you want.

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Dale FyeOwner, Developing Solutions LLCAuthor Commented:

Could not find that combination of text in the theme editor.  I did find three references to:

font-size: 16px;

But two of the three were for the MyAccount and the Cart button in the page header.  Neither was for page bodies.

If you just add the code I gave you to the end of the style.css it will adjust the content area  font size.
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Dale FyeOwner, Developing Solutions LLCAuthor Commented:
OK, I'll give that a try and post back.
Dale FyeOwner, Developing Solutions LLCAuthor Commented:
Worked like a charm.

Care to give me a brief explanation about what I just did?
The content area is surrounded by a div with id "pagecont" for the pages and "content" for the posts. So you can control styling for them using those id tags in the css.

There's an initial font styling toward the beginning of the stylesheet for the body tag that sets anything in the page that hasn't had it's own styling set, but if you change that, everything on the page will change that doesn't have it's own set like the code I gave you for the content area.
Dale FyeOwner, Developing Solutions LLCAuthor Commented:
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