2. CSS 3 Rounded Corners
Rounded corner elements can spruce up a website, but creating a rounded corner requires a designer to write a lot of code. Adjusting the height, width and positioning of these elements is a never-ending chore because any change in content can break them.
CSS 3 addresses this problem by introducing the border-radius property, which gives you the same rounded-corner effect and you don't have to write all the code. Here are examples for displaying rounded corners in different places of a website.