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Rounded Corners in CSS

CSS | Rounded Corners: In this tutorial, we are going to learn how to make rounded corners using CSS (Cascading Style Sheet)?
Submitted by Anjali Singh, on November 28, 2019

CSS | Rounded Corners

border-radius property is commonly used to convert box elements into circles. We can convert box elements into the circle element by setting the border-radius to half of the length of a square element.

Basic syntax:

Element {
    width: 150px;
    height: 150px;
    border-radius: 50%;
}

Example:

<!DOCTYPE html>
<html>

<head>
    <style>
        p {
            background: #73AD21;
            width: 200px;
            height: 150px;
            border-radius: 50%
        }
    </style>
</head>

<body>
    <h1>CSS Rounded Corners</h1>
    <p></p>
</body>

</html>

Output

Rounded Corners in CSS | Example 1

In the above example, 50% border-radius is applied to all the corners.

Rounded Corner properties

  • border-radius
  • border-top-left-radius
  • border-top-right-radius
  • border-bottom-left-radius
  • border-bottom-right-radius

1) border-radius

This CSS property specifies the radius of the corners of the element. border-radius property can have values between one to four.

1) One value

The property takes a single value to the border-radius and that value is applied to all the four corners and the corners are rounded equally.

Syntax:

Element {
    border-radius: 15px;
}

2) Two values

This property takes two values to the border-radius. The first value is applied to top-left and bottom-right corners, the second value is applied to top-right and bottom-left corners.

Syntax:

Element {
    border-radius: 15px 10px;
}

3) Three values

This property takes three values to the border-radius.The first value is applied to the top-left corner and the second value is applied to top-right and bottom-left corners, and the third value is applied to the bottom-right corner.

Syntax:

Element {
    border-radius: 15px 10px 30px;
}

4) Four values

This property takes four values to the border-radius and applies four different values to each of the corners.The first value is applied to the top-left corner, the second value is applied to the top-right corner, the third value is applied to the bottom-right corner and the fourth value is applied to the bottom-left corner.

Syntax:

Element {
    border-radius: 15px 10px 20px 5px;
}

border-top-left-radius

This property specifies the radius of the top left corner. This property takes value in length and in % where % defines the shape of the top-left corner in %.

Syntax:

Element {
    border-top-left-radius: 50%
}

Example:

<!DOCTYPE html>
<html>

<head>
    <style>
        p {
            background: #a44170;
            width: 200px;
            height: 150px;
            border-top-left-radius: 15px;
        }
    </style>
</head>

<body>
    <h1>CSS Rounded Corners</h1>
    <p></p>
</body>

</html>

Output

Rounded Corners in CSS | Example 2

In the above example, the top-left corner is rounded.

border-top-right-radius

This property specifies the radius of the top right corner. This property takes values in length and in % where % defines the shape of the top-right corner in %.

Syntax:

Element {
    border-top-right-radius: 50%;
}

Example:

<!DOCTYPE html>
<html>

<head>
    <style>
        p {
            background: #a44170;
            width: 200px;
            height: 150px;
            border-top-right-radius: 15px;
        }
    </style>
</head>

<body>
    <h1>CSS Rounded Corners</h1>
    <p></p>
</body>

</html>

Output

Rounded Corners in CSS | Example 3

In the above example, the top right corner is rounded.

border-bottom-left-radius

This property specifies the radius of the bottom left corner. This property takes values in length and in % where % defines the shape of the bottom-left corner in %.

Syntax:

Element {
    border-bottom-left-radius: 50%;
}

Example:

<!DOCTYPE html>
<html>

<head>
    <style>
        p {
            background: #a44170;
            width: 200px;
            height: 150px;
            border-bottom-left-radius: 15px;
        }
    </style>
</head>

<body>
    <h1>CSS Rounded Corners</h1>
    <p></p>
</body>

</html>

Output

Rounded Corners in CSS | Example 4

In the above example, the bottom left corner is rounded.

border-bottom-right-radius

This property specifies the radius of the bottom right corner. This property takes values in length and in % where % defines the shape of the bottom-right corner in %.

Syntax:

Element {
    border-bottom-right-radius: 50%;
}

Example:

<!DOCTYPE html>
<html>

<head>
    <style>
        p {
            background: #a44170;
            width: 200px;
            height: 150px;
            border-bottom-right-radius: 15px;
        }
    </style>
</head>

<body>
    <h1>CSS Rounded Corners</h1>
    <p></p>
</body>

</html>

Output

Rounded Corners in CSS | Example 5

In the above example, the bottom right corner is rounded.







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