/* Shorthand */
border-radius: 0px 0px 9999px 9999px / 0px 0px 0px 9999px

/* Longhand */
border-top-left-radius: 0px 0px
border-top-right-radius: 0px 0px
border-bottom-right-radius: 0px 0px
border-bottom-left-radius: 9999px 9999px