CSS Pseudo Elements
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In this article, you will learn about CSS Pseudo Elements. Let’s start with what is CSS Pseudo Elements.
What are CSS Pseudo Elements?
When a keyword is applied to a selector, you can style a particular area of both the individual samples using CSS pseudo-elements.
When a keyword is applied to a selector, it creates a CSS pseudo-element that allows you to design a particular area of the chosen element (s). For instance,::first-line may be used to alter the font of a paragraph’s first line.
A term that is utilised with a selector to specify the unique status of the selected items is known as a pseudo-class. In contrast to pseudo-classes, that are employed to style the entire element, quasi are used to style a certain portion of an element.
For instance, the very first letter or line of the an element can be styled using a pseudo-element. The content can be be added before or after an element using the pseudo-elements.
To style certain areas of an element, use a CSS pseudo-element. It can be utilized for instance to:
- The element’s initial letter or line in style
- Add content either before or after an element’s content.
The pseudo-element syntax:
selector::pseudo-element {
property: value;
}Classes and pseudo-elements in CSS
To style the exact element that has that class, the quasi can be used in conjunction with CSS classes. This serves as an illustration of a CSS class-based pseudo-element.
<html>
<head>
<style>
body{
text-align: center;
font-size: 30px;
}
h1.example::first-letter {
color: rgb(255,0,242);
font-size: 2cm;
font-family: Lucida Calligraphy;
}
</style>
</head>
<body>
<h1 class="example"> DataFlair </h1>
<h1 style="color:blue"> Hello World!!! </h1>
<h3> This serves as an illustration of a CSS class-based pseudo-element.</h3>
</body>
</html>Output:
Singular colon (:) syntax is used in CSS1 and CSS2 for the both pseudo-elements and pseudo-classes. For backward compatibility, CSS1 and CSS2 pseudo-elements can use the single colon syntax.
While there are a number of CSS pseudo-elements, we will focus on some of the most popular ones. These are the most popular CSS pseudo-elements listed:
- selection: It is employed to pick the portion of an item that the user has chosen.
- first-line: The text’s opening line is styled.
- first-letter: It chooses the text’s first letter.
- after: It is employed to add something following the content of the element.
- before: It is employed to insert something prior to the content of the element.
- marker: Pseudo-element chooses the list item’s marker box, which frequently has a punch or numeral. Any component or psuedo intellectual that is set to display can use it: list-items like the <summary> and <li> components
Selection Pseudo Element:
<!DOCTYPE html>
<html lang="en">
<head>
<title>selection Demo</title>
<style>
body{
background-color: whitesmoke;
text-align: center;
font-size: 20px;
}
h1
{
color: rgb(255,0,242);
font-size: 45px;
}
h2
{
color: blue;
}
p::selection{
color:brown;
background-color: #ffe996;
font-size: 30px;
}
::selection{
color: #ffe996;
background-color: brown;
font-size: 30px;
}
</style>
</head>
<body>
<h1>DataFlair</h1>
<h2>::selection element</h2>
<p>Content in this paragraph turns red with
green background on selection.</p>
<span>As this is not a paragraph, you can notice red
background and green text on selection.</span>
</body>
</html>
Output:
First-line Pseudo Element:
<html>
<head>
<style>
body{
text-align: center;
}
h1::first-line {
font-family: Lucida Calligraphy;
font-size: 3cm;
color: #a71a9f;
text-shadow: 5px 8px 9px #14d7d2;
}
</style>
</head>
<body>
<h1> DataFlair</h1>
<h2> Here is an illustration of the first-line pseudo-element. </h2>
</body>
</html>Output:
First-letter Pseudo Element:
<html>
<head>
<style>
body{
text-align: center;
}
h1::first-letter {
font-family: Lucida Calligraphy;
font-size: 4cm;
color: #a71a9f;
text-shadow: 5px 8px 9px #14d7d2;
}
h1{
color: green;
font-size: 2cm;
}
</style>
</head>
<body>
<h1> DataFlair</h1>
<h2> Here is an illustration of the::first-letter pseudo-element.</h2>
</body>
</html>Output:
After Pseudo Element:
<!DOCTYPE html>
<html>
<head>
<style>
body
{
text-align: center;
}
h1::after {
content: "\01F525";
}
</style>
</head>
<body>
<h1 style="color:rgb(255,0,242); font-size:40px">DataFlair</h1>
<p style="color:blue; font-size:25px">The::after pseudo-element adds content following an element's content.</p>
</body>
</html>Output:
Before Pseudo Element:
<!DOCTYPE html>
<html>
<head>
<style>
body
{
text-align: center;
}
h1::before{
content: "\01F525";
}
</style>
</head>
<body>
<h1 style="color:rgb(255,0,242); font-size:60px">DataFlair</h1>
<p style="color:blue; font-size:45px">The::after pseudo-element adds content following an element's content.</p>
</body>
</html>Output:
Marker Pseudo Element:
<!DOCTYPE html>
<html lang="en">
<head>
<title>marker Demo</title>
<style>
body{
background-color: whitesmoke;
text-align: center;
}
h2
{
font-size: 35px;
color: blue;
}
h1{
color: rgb(255,0,242);
font-size: 50px;
}
ul{
width: 40px;
font-size:30px;
}
ul li::marker{
color: brown;
font-size: 40px;
}
</style>
</head>
<body>
<h1>DataFlair</h1>
<h2>::marker element</h2>
<ul style="text-align:center">
<li>ReactJs</li>
<li>Python</li>
<li>Java</li>
</ul>
</body>
</html>Output:
Conclusion
In this article, we get an overview of what pseudo elements are and the different ways to implement them. When using a pseudo-element, you can target or add an additional component without having to input further HTML.
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