Type Font Size in the search box, and press Enter. 2. In the Display window that appears, choose the Medium font size (125 percent of the default size) or the Larger font size (150 percent of the ...

Click "OK" to search for the text in the HTML code. Repeat the process to continue searching for additional results for "font-family" until you locate the section of code inside the body { tag.

Find the line of code that reads "font-size:" and then a number. Changing the number will increase or decrease the size of the header font, with the higher numbers resulting in larger fonts.