Learn CSS

"If you want to learn how to style and design web pages, you need to master CSS. CSS stands for Cascading Style Sheets, and it is the language that defines the appearance and layout of HTML elements. In this course, you will learn the basics of CSS, such as selectors, properties, values, units, and colors. You will also learn how to use CSS to create responsive web design, animations, transitions, and more. By the end of this course, you will be able to create beautiful and functional web pages using CSS."

CSS Z-index Property

The z-index property in CSS is used to control the vertical stacking order of elements on a webpage. It specifies the element's position along the z-axis, which is perpendicular to the screen.


What is z-index?

When two or more elements overlap, the z-index property determines which one appears on top of the other. The element with a higher z-index value appears on top of the element with a lower z-index value. If two elements have the same z-index value, the one that appears last in the HTML markup appears on top.

The z-index property can be applied to any element that has a position property value of absolute, fixed, or relative.



Here is an example of how to use the z-index property:

div {
 position: relative;
 z-index: 1;
p {
 position: relative;
 z-index: 2;

In this example, the p element has a higher z-index value than the div element, so it will appear on top of the div element if they overlap.

It's important to note that the z-index property only works on positioned elements, meaning those with a position value of absolute, fixed, or relative. If an element does not have a positioned property, the z-index property will have no effect.

In conclusion, the z-index property is a powerful tool for controlling the layout of your webpage, especially when it comes to overlapping elements. By using the z-index property, you can create visually engaging and dynamic layouts that adapt to different screen sizes and devices.