Making small changes is easy, Helix Ultimate and SP Page Builder visual interface provides controls for many design properties. But sometimes you may want to add additional, for example, custom CSS that can't be created with option(s). It helps if you’re familiar with CSS.

You can easily customize the website with your own custom code, for example, with CSS, JavaScript, Meta tags, tracking and verification code by using the custom fields in that section of template settings. More information and tips on how to customize design you'll find inside Helix Ultimate Manual and blog post "Which line I have to edit...".