CSS3 border-radius (rounded corner) effect debugging tool

CSS3 border-radius is a tool used to create rounded corners on HTML elements. It allows you to specify the radius of each corner individually, creating custom shapes. With this tool, you can easily adjust the size and shape of your corners to create the desired effect. It is a useful tool for web designers and developers who want to add a sleek and modern look to their websites. The tool provides several options such as adjusting the border radius, background color, and border thickness, to name a few. By using this tool, you can create beautiful designs and enhance the user experience of your website.