html paragraph font size code The author suggests using the TinyMCE Advanced plugin (my reaction) from the WordPress repository (as well as using paragraph headings like HEADING 1 to h6) However when performing simple tasks such as changing the font size on WordPress Setting Paragraph Attributes. Attributes for paragraphs can be set using embedded, linked or inline style sheets. p font-family: Arial , sans-serif font-size : 16px font-weight : normal text-align :left text-indent : 1em . The next blue box contains example code that, once called, would change your font face to Courier and color it red. As you can see, we have defined the class name as "custom."