https://www.w3schools.com/
폰트어썸 https://cdnjs.com/libraries/font-awesome
구글폰트 https://fonts.google.com/noto/specimen/Noto+Sans+KR?subset=korean¬o.script=Kore
https://fontawesome.com/icons/music?s=solid&f=classic
https://developer.mozilla.org/ko/docs/Web/HTTP/Status http 상태코드 볼 수 있음
