Set top-left corner border with CSS

The CSS border-top-left-radius property is used to set a rounded border specifically for the top-left corner of an element. This property allows you to create asymmetric rounded corners where only the top-left corner has a different radius than other corners.

Syntax

selector {
    border-top-left-radius: value;
}

Possible Values

Value Description
length Defines the radius in px, em, rem, etc.
% Defines the radius as a percentage of the element's dimensions
initial Sets the property to its default value
inherit Inherits the value from the parent element

Example

The following example demonstrates how to set a larger border radius for the top-left corner while keeping other corners with a smaller radius −

<!DOCTYPE html>
<html>
<head>
<style>
    #rcorner {
        border-radius: 25px;
        border-top-left-radius: 45px;
        background: #FADBD8;
        padding: 20px;
        width: 300px;
        height: 150px;
        color: #333;
        font-family: Arial, sans-serif;
    }
</style>
</head>
<body>
    <p id="rcorner">Rounded top-left corner!</p>
</body>
</html>
A light pink rectangular box with rounded corners appears. The top-left corner has a more pronounced 45px radius curve, while the other three corners have a smaller 25px radius curve.

Conclusion

The border-top-left-radius property provides precise control over individual corner styling. It's particularly useful for creating unique designs where you need asymmetric corner treatments on elements.

Updated on: 2026-03-15T13:27:33+05:30

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