CSS Border-Start-End-Radius Property

The CSS border-start-end-radius property allows web developers to create rounded corners on the start and end borders of an element. This property adds flexibility to the design of web pages, enabling developers to achieve unique shapes for buttons, cards, and other UI components. This tutorial will take you step-by-step through understanding the border-start-end-radius property, including how to use it, its values, browser compatibility, practical examples, and its relation to other border radius properties.

Overview of CSS Border Properties

Before diving deeper into the border-start-end-radius property, it’s important to understand the general CSS border properties. Borders are lines that surround elements on a webpage. CSS allows for various styles, widths, colors, and the rounding of corners on these borders. The additional specific border-radius properties, including border-start-end-radius, enhance control over the layout.

What is the border-start-end-radius Property?

The border-start-end-radius property is part of the CSS Box Model. It allows developers to define the rounding of the border’s start and end edges, typically the left and right sides in left-to-right languages. This property is particularly useful for rounded elements that need to retain specific shapes based on their placement within the layout.

How to Use the border-start-end-radius Property

selector {
    border-start-end-radius: ;
}

The selector targets the desired HTML element, while the value defines the radius size. Here’s a sample syntax:

div {
    border-start-end-radius: 15px;
}

Possible Values for border-start-end-radius

The border-start-end-radius property accepts various values:

• Length Values: Such as pixels (px), ems, or rems. Example: 10px
• Percentage: A percentage determines the radius relative to the border box. Example: 50%
• Global Values: inherit, initial, unset

Value Type	Example Value	Description
Length	10px	Fixed radius in pixels.
Percentage	50%	Radius is 50% of the element’s border box.
Global	inherit	Takes value from its parent element.

Support for Different Browsers

It’s essential to know the browser compatibility before using any CSS property. The border-start-end-radius property has good support in most modern browsers, including:

• Chrome: ✔️
• Firefox: ✔️
• Safari: ✔️
• Edge: ✔️
• Internet Explorer: ❌ (Not supported)

Practical Examples of border-start-end-radius Usage

Let’s look at some real-world examples of the border-start-end-radius property:

Example 1: Basic Border Radius

<div class="rounded-box">
  <p>This box has rounded start and end borders.</p>
</div>

Example 2: Different Radius Sizes

<div class="box-one">Box One</div>
<div class="box-two">Box Two</div>

Comparison with Other Border Radius Properties

The border-start-end-radius property is part of a family of properties related to border radius. Here’s how it compares with its counterparts:

Property	Description	Effect
border-radius	Defines the radius of all corners.	Uniform rounding on all four corners.
border-start-radius	Defines the radius for the start corner.	Only the starting corner gets rounded.
border-end-radius	Defines the radius for the end corner.	Only the ending corner gets rounded.
border-start-end-radius	Defines the radius for both starting and ending corners.	Rounding is applied specifically to start and end sides.

Summary and Final Thoughts on border-start-end-radius

The border-start-end-radius property is a powerful tool for achieving tailored border radiuses in web design. Its flexibility allows for improved aesthetics and can enhance user interaction in UI components like buttons and div containers. Don’t forget to check for browser compatibility before implementation. As CSS evolves, being aware of these properties will allow you to create modern and visually appealing layouts.

FAQ Section

What is the difference between border-radius and border-start-end-radius?

The border-radius property applies to all corners of an element, while the border-start-end-radius applies specifically to the start and end borders only.

Can I use border-start-end-radius in Internet Explorer?

No, the border-start-end-radius property is not supported in Internet Explorer. It is advisable to use fallbacks for compatibility.

What values can I use with border-start-end-radius?

You can use lengths (px, em), percentages, and global values (inherit, initial, unset) with the border-start-end-radius property.

Is there a shorthand for border-start-end-radius?

Currently, there is no shorthand property specifically for border-start-end-radius, but it’s often used in combination with other border properties.