https://stackoverflow.com/questions/67115874/border-radius-on-parent-divparent div에 overflow: hidden; 입력
공부
https://m.blog.naver.com/PostView.naver?isHttpsRedirect=true&blogId=kira4195&logNo=221188151828
https://velog.io/@ursr0706/%EC%9B%B9-%EC%A0%91%EA%B7%BC%EC%84%B1%EC%9D%84-%EA%B3%A0%EB%A0%A4%ED%95%98%EC%97%AC-%ED%85%8D%EC%8A%A4%ED%8A%B8-%EC%88
https://blogpack.tistory.com/553