What does css pseudo element mean?

css Pseudo element is a special selector in CSS, used to add additional styles to selected elements. Pseudo elements are implemented by inserting virtual elements before or after the content of the element. Pseudo elements The syntax starts with a double colon and can be used to insert additional content into the selected element and add styles to it. It can be used to create special effects, such as inserting icons, adding decorative elements, or changing the layout of the element. Common pseudo-elements There are ::before, ::after, ::first-letter, ::first-line and so on.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

CSS pseudo-element is a special selector in CSS that is used to add additional styles to selected elements. Pseudo elements are implemented by inserting virtual elements before or after the content of the element. The syntax for pseudo-elements begins with a double colon (::).

Pseudo elements can be used to insert additional content into the selected element and add styles to it. They can be used to create special effects, such as inserting icons, adding decorative elements, or changing the layout of elements.

Common pseudo elements include:

::before: Insert a virtual element before the content of the selected element.

::after: Insert a virtual element after the content of the selected element.

::first-letter: The first letter of the selected element.

::first-line: The first line of the selected element.

::selection: Select the text selected by the user.

The usage of pseudo elements is as follows:

1. Use double colons (::) in CSS style sheets to represent pseudo elements.

2. Select the element to which you want to add the pseudo-element.

3. Use the name of the pseudo element to define the style.

For example, to insert a decorative arrow at the beginning of a paragraph, you would use the following code:

p::before {
  content: "➤";
  color: red;
}

This will insert a red arrow at the beginning of each paragraph.

Pseudo-elements can also be used in conjunction with pseudo-classes for more precise selection of elements. For example, to select the first letter in the first cell of a table, you would use the following code:

table tr:first-child td:first-child::first-letter {
  font-size: 20px;
}

This would make the first letter in the first cell have a font size of 20 pixels.

In short, CSS pseudo-elements are a powerful tool that can be used to add additional style and content to selected elements. They can be used to create a variety of effects to make web pages richer and more interesting.

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