Font Size in Magazine Basic

you need to find out what the class is for the paragraph element in the css and change it in your theme’s style.css file.

if you use firefox you can use the plugin firebug to navigate your way down through the code to see what you need to change. otherwise right click and view the page source code and scroll down until you find a paragraph in a post and make a note of the class and then go back to the style.css file and make your changes.