click-area
The .click-area class makes a parent completely clickable based on the presence of a single, direct <a> child.
visually-hidden
The .visually-hidden class allows you to hide an element for the users eye, but still be readable for screen readers.
Transition
Classes that enable you to set CSS transitions on all transitional attributes of an element, as shown below.
css.transition-100/200/300/400/500 {
transition: all 100ms/200ms/300ms/400ms/500ms ease;
}