They are used during user interaction

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Allows you to style specific parts of an element.
They don't add new content, they just change the style of the element.
Create new virtual elements that can be styled.
Single colon syntax.
Double colon syntax.
The general syntax of pseudo-classes looks like this:

selector :pseudo-class
property : value;

Basic pseudo-classes:

:hover - Applies to an element when the mouse cursor hovers over it.
:focus - Activated when the element receives focus.
:active — applied to an element when it is clicked.
:nth-child() — allows you to select an element based on its position among other child elements.
:first-child and :last-child - apply to the first or last child element.
:checked - applies to form elements that are checked (e.g. checkboxes).

A video explaining the basic CSS pseudo-classes and pseudo-elements.
Useful links
CSS pseudo-elements are an important tool for web developers, helping to improve the appearance of web pages by adding styles and content to elements without having to change the HTML code. However, you need to take into account the peculiarities of browsers and check pseudo-elements for compatibility.

It is also important to understand the differences morocco telegram data between pseudo-elements and pseudo-classes. Pseudo-classes focus on the state of existing elements, while pseudo-elements allow you to create virtual parts of elements and add content.

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November 21, 2024