Button — Shopify Polaris
Buttons are used primarily for actions, such as “Add”, “Close”, “Cancel”, or “Save”. Plain buttons, which look similar to links, are used for less important or less commonly used actions, such as “view shipping settings”.
Visually hidden — Shopify Polaris
shopify/polaris - Codesandbox
Shopify Polaris React, Component Encyclopedia
Icons — Shopify Polaris, icon card
Toggle] Import Switch as a new toggle component · Issue #594
Documenting Design Tokens
Checkout UI extensions
Components — Shopify Polaris
Why Is The Shopify Admin Experience Important For You?
Color — Shopify Polaris
Uplifting Shopify Polaris. The process of evolving a large scale…, by José Torre