Best Premium and Free WordPress Themes › Forums › Education Base › Font size › Reply To: Font size
October 31, 2017 at 3:03 am #21564
The link is wrong. You are not using WordPress.Com theme, you are using WordPress.Org theme and every file of theme you have inside your WordPress installation folder.
public_html/wp-content/themes So check that file and check your style.css as mentioned above.
Above css need to put inside Appearance > Customize > Additional CSS of your site. First login to your dashboard, you will get the options.