Delete frontend-react/src/App.css

frontend-react/src/App.css

-.App {
-    text-align: center;
-}
-
-.App-logo {
-    height: 40vmin;
-    pointer-events: none;
-}
-
-@media (prefers-reduced-motion: no-preference) {
-    .App-logo {
-        animation: App-logo-spin infinite 20s linear;
-    }
-}
-
-.App-header {
-    filter: brightness(20%);
-    min-height: 100vh;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-    font-size: calc(10px + 2vmin);
-    color: white;
-}
-
-.App-link {
-    color: #cbf55c;
-}
-
-@keyframes App-logo-spin {
-    from {
-        transform: rotate(0deg);
-    }
-    to {
-        transform: rotate(360deg);
-    }
-}