border-radius ​

br-10

border-radius:10px;

br-10-20

border-radius:10px 20px;

br-10-20-30

border-radius:10px 20px 30px;

br-10-20-30-40

border-radius:10px 20px 30px 40px;

br-10-20-30-40-50

匹配不到不会生成样式

br-10-20-30-40%

border-radius:10% 20% 30% 40%;

br-b-2

border-bottom-left-radius:2px;border-bottom-right-radius:2px;

br-l-3

border-top-left-radius:3px;border-bottom-left-radius:3px;

br-r-4

border-top-right-radius:4px;border-bottom-right-radius:4px;

br-r-50%

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

br-t-1

border-top-left-radius:1px;border-top-right-radius:1px;

br-tr-40

border-top-right-radius:40px;

br-tl-40

border-top-left-radius:40px;

br-br-40

border-bottom-right-radius:40px;

br-bl-40

border-bottom-left-radius:40px;

radius-t-1

border-top-left-radius:1px;border-top-right-radius:1px;

radius-bl-40

border-bottom-left-radius:40px;

radius-10-20-30-40%

border-radius:10% 20% 30% 40%;