[U] To sass

frontend/.gitignore

@@ -21,3 +21,5 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+.idea

frontend/src/App.css

@@ -1,38 +0,0 @@
-.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 {
-  background-color: #282c34;
-  min-height: 100vh;
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  font-size: calc(10px + 2vmin);
-  color: white;
-}
-
-.App-link {
-  color: #61dafb;
-}
-
-@keyframes App-logo-spin {
-  from {
-    transform: rotate(0deg);
-  }
-  to {
-    transform: rotate(360deg);
-  }
-}

frontend/src/App.sass

@@ -0,0 +1,19 @@
+.App
+  text-align: center
+
+.App-logo
+  height: 40vmin
+  pointer-events: none
+
+.App-header
+  background-color: #282c34
+  min-height: 100vh
+  display: flex
+  flex-direction: column
+  align-items: center
+  justify-content: center
+  font-size: calc(10px + 2vmin)
+  color: white
+
+.App-link
+  color: #61dafb

frontend/src/App.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import logo from './logo.svg';
-import './App.css';
+import './App.sass';
 
 function App() {
   return (

frontend/src/index.css

@@ -1,13 +0,0 @@
-body {
-  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
-    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
-    sans-serif;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-code {
-  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
-    monospace;
-}

frontend/src/index.sass

@@ -0,0 +1,8 @@
+body
+  margin: 0
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif
+  -webkit-font-smoothing: antialiased
+  -moz-osx-font-smoothing: grayscale
+
+code
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace

frontend/src/index.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import ReactDOM from 'react-dom/client';
-import './index.css';
+import './index.sass';
 import App from './App';
 import reportWebVitals from './reportWebVitals';