불필요 선언 삭제

client/src/index.js

@@ -3,7 +3,6 @@ import ReactDOM from "react-dom";
 import "./scss/custom.scss";
 import "./index.css";
 import "bootstrap";
-import "bootstrap/dist/css/bootstrap.min.css";
 import App from "./App";
 import reportWebVitals from "./reportWebVitals";