#480 jQuery.css

Create a simple DOM wrapper function $ that supports method chaining like jQuery. The wrapper should enable fluent API for manipulating DOM elements.

Requirements

1. $(selector) – selects DOM elements using CSS selectors.
2. .css(property, value) – sets CSS properties on the selected elements.
3. Method chaining – all methods should return the wrapper instance to enable chaining.

Example

$('#button')
  .css('color', '#fff')
  .css('backgroundColor', '#000')
  .css('fontWeight', 'bold');

This should apply all three CSS properties to the element with id "button" in a single fluent chain.

Signature

function $(selector: string): {
  css(property: string, value: string): any;
};