Styling the Website with CSS
The easy way to style web pages is to put the styling instructions in a single external style sheet and link every page to that style sheet. A style sheet is simply a collection of instructions that tell the browser how to style the elements on a page. If we link each page to the single style sheet, the work involved in changing a website’s appearance is reduced substantially. The appearance of all the pages in a whole website can be made by a change in the single external CSS style sheet. The change cascades into all the pages that are linked to the style sheet.