.css()

Get the value of a computed style property for the first element in the set of matched elements or set one or more CSS properties for every matched element.

.prev()

Get the immediately preceding sibling of each element in the set of matched elements. If a selector is provided, it retrieves the previous sibling only if it matches that selector.

.promise()

Return a Promise object to observe when all actions of a certain type bound to the collection, queued or not, have finished.