What are css pseudo elements used for?

css pseudo-element is used to add some special effects of selectors. For example, the [:first-line] pseudo-element is used to set special styles to the first line of text, and the [:first-letter] pseudo-element is used to Sets a special style to the first letter of text.

#CSS pseudo-element is used to add some special effects to the selector.

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Syntax of pseudo elements:

selector:pseudo-element {property:value;}

CSS classes can also use pseudo elements:

selector.class:pseudo-element {property:value;}

Example:

:first-line pseudo-element

"first-line" pseudo-element is used to set a special style to the first line of text.

In the following example, the browser will format the first line of text of the p element according to the style in the "first-line" pseudo-element:

p:first-line {
    color:#ff0000;    
    font-variant:small-caps;
}

Note: "first- line" pseudo-element can only be used on block-level elements.

:first-letter pseudo-element

"first-letter" pseudo-element is used to set a special style to the first letter of text:

p:first-letter {
    color:#ff0000;    
    font-size:xx-large;
}

Note: "first-letter" Pseudo-elements can only be used with block-level elements.

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