how does CSS3 help in implementing rounded borders easily?

Using this feature, you may give objects rounded corners! ... The first value will have an impact on the top-left corner, the second on the top-right corner, the third on the bottom-right corner, and the fourth on the bottom-left corner. Values in four - border-radius: 15 px 50 px 30 px 5 px

• Tip: You can give items rounded corners by using this property! ... The top-left corner will be affected by the first value, the top-right corner by the second, the bottom-right corner by the third, and the bottom-left corner by the fourth. Four values - border-radius: 15px 50px 30px 5px;