The border-bottom-right-radius CSS property sets the rounding of the bottom-right corner of the element. The rounding can be a circle or an ellipse, or if one of the value is 0 no rounding is done and the corner is square.
A background, being an image or a color, is clipped at the border, even a rounded one; the exact location of the clipping is defined by the value of the background-clip property.


        <title>CSS Tutorials</title>
            div {
                border-bottom-right-radius: 40%;
                border-style: black 3px double;
                background-color: rgb(250, 20, 70);
                background-clip: content-box;
                width: 200px;
            border bottom right radius