Prompt Title: Z-Index in CSS.

In CSS, the position property is used to specify how an HTML element should be positioned on a web page. There are four types of position values:

1. Static: This is the default value, and it means that the element is positioned according to the normal flow of the page. It cannot be moved using the top, bottom, left, or right properties.

2. Relative: This value allows you to move an element relative to its normal position. You can use the top, bottom, left, and right properties to specify how many pixels or other units an element should be moved from its original position.

3. Absolute: This value allows you to position an element relative to its closest positioned ancestor. If there is no positioned ancestor, it is positioned relative to the document body. You can use the top, bottom, left, and right properties to specify the position of the element.

4. Fixed: This value positions an element relative to the viewport. It will not move even if the page is scrolled. You can use the top, bottom, left, and right properties to specify the position of the element.

Overall, the position property is a powerful tool for web developers who want to control the layout and positioning of their web pages. By using the different position values, developers can create more dynamic and interactive web pages that respond to user input and provide a better user experience.