Resume headings are the titles of each section you include in your resume. A heading is there to tell readers what a section is about. It also helps resume readers and search engines better understand the context. Therefore, they need to be clearly visible at first glance.
New Resume Editor
Click the drop down menu on the top of the editor to defined the paragraph.
Click "T" to defined the font size for the content including the heading.
Classic Resume Editor
Click "H" to defined the font size for the headings.