A hover state (also called a rollover state) is the slight animation that is triggered when a user rolls their cursor over a link. This helps ensure that site visitors know what they can and cannot click on throughout the site. A hover state can be as simple as a button changing colour or as complex as design elements moving or fading in and out.

There is no point in building a website unless there are visitors coming in. A major source of traffic for most sites on the Internet is search engines like Google, Bing and so on.