Code

Open the top bar menu and choose Global Settings > Code for site-wide CSS and JavaScript.

Stylesheets

Under CSS, choose Add Stylesheet, set Name and CSS Code without <style> tags, then save:

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

Name is an editor label; selectors determine affected elements.

Scripts

Under Scripts, choose Add Javascript, set Name and JavaScript Code without <script> tags, and save. Handle absent page elements and load dependencies first; test visitor behavior on the front end.

Open entries to edit or remove them, then save. Removal affects every matching element or dependent behavior. CSS specificity/source order still determines which rules win.