Die Langform von border-radius

Variante 1

border-top-right-radius: 10% 50%;
border-bottom-right-radius: 10% 50%;
border-bottom-left-radius: 10% 50%;
border-top-left-radius: 10% 50%;

Variante 1

border-top-right-radius: 1px 50px;
border-bottom-right-radius: 10px 50px;
border-bottom-left-radius: 150px 10px;
border-top-left-radius: 12px;