Which CSS3 property creates rounded corners on elements?

Which CSS3 property creates rounded corners on elements?

• A. Border
• B. Radius
• C. Border-radius
• D. Round-corner

Answer: (C)

Border-radius is the CSS3 property that creates rounded corners on elements. By applying a radius value, you tell the browser how round each corner should be. For example, border-radius: 12px; rounds all corners by 12 pixels. You can target individual corners with border-top-left-radius, border-top-right-radius, etc., or use the shorthand with four values to control each corner. You can even create elliptical corners with a slash, like border-radius: 10px 20px / 5px 15px. The other options shown do not produce rounded corners: border defines the line around the element, not the curve; radius on its own isn’t a valid property; round-corner isn’t a CSS property. So the property that specifically creates rounded corners is border-radius.

Border-radius is the CSS3 property that creates rounded corners on elements. By applying a radius value, you tell the browser how round each corner should be. For example, border-radius: 12px; rounds all corners by 12 pixels. You can target individual corners with border-top-left-radius, border-top-right-radius, etc., or use the shorthand with four values to control each corner. You can even create elliptical corners with a slash, like border-radius: 10px 20px / 5px 15px. The other options shown do not produce rounded corners: border defines the line around the element, not the curve; radius on its own isn’t a valid property; round-corner isn’t a CSS property. So the property that specifically creates rounded corners is border-radius.