See the w3c HTML tag resources to copy and paste tags into your html document.
See the w3c CSS Stylesheet resources to copy and paste tags into your css document.
See the w3c java script resources to learn how to make your web page interactive. Here is an example of a mouse over interaction
The onmouseover and onmouseout events can be used to trigger a function when the user mouses over, or out of, an HTML element. Learn the onmouseover and onmouseout events w3c java script resources to learn how to make your web page interactive.
Learn how to add pop up boxes. Add a confirm box to this page.