HTML and CSS Certification Practice Test 2026 – The All-in-One Guide to Master Your Certification!

The 'border' property in CSS is specifically designed to define the border that surrounds an element. By using this property, you can set the width, style, and color of the border, enhancing the visual separation and appearance of the element in relation to other content on the page. This property can be particularly useful for creating emphasis around elements, such as buttons, images, or input fields, thereby improving user experience and interface design.

This capability to specify the border attributes allows for detailed customization, helping developers achieve their desired aesthetics effectively. The other choices address different attributes or aspects of CSS but do not relate directly to defining borders.