HTML tags have matching classes for their styles. Heading levels should follow the correct hierarchy in the HTML, but styles can be overriden with classes. We recommend always using the class to make separating the tag from the style a habit. Avoid combo classes when possible.

Text classes are strictly used for font-size and line-height. If you need bigger sizes, you should use heading classes. Any other styling usually comes from a parent element. Sometimes you need to override the parent element's color or font-weight, in which case you can use combo classes or spans.

This area is not to set specific classes, but rather a checkpoint to add your project's colors to the global swatches and describe how they're used.

Having to apply gradients each time on new classes is annoying. So is having a class that takes up space just for a gradient.
That's why you can copy them from Figma into the global custom code block designated for gradients, allowing you to apply gradient backgrounds using an attribute.

For clipping text, make sure the property is background-image, not background

Use the section class with its combo classes for all your sections to maintain consistency and avoid creating a new class for every new section. There are of course exceptions, but whenever possible, think of reusable ways to create elements.
These combo classes can be stacked.
If you find yourself stacking more than 3 classes, you should create a new combo class for that case.
You could also add more variations (i.e. cc-top-xl, cc-cta, ...)

Sections usually need a container to keep layouts from becoming too wide. Containers also control the horizontal padding in order to maintain the same spacing throughout your project.
A default container acts as "12 columns", as it takes up the full design width (usually 1440px). That's why combo class names mention columns.