We will learn about the curved outside in the active tab used in the navigation menu using HTML, CSS & Javascript. One of the most beautiful and good-looking designs of a navigation menu is the ‘Curve outside in Active Tab’ design. With the help of the CSS border-radius property, it is very easy to make an inside curve. But while making an outside curve it becomes complex. So we are going to learn How to make a ‘Curved Outside in Active Tab’ in Navigation Menu Using Html CSS & JavaScript