optimized some css

src/App.css

@@ -1,7 +0,0 @@
-body {
-  background-color: pink;
-}
-
-.App {
-  text-align: center;
-}

src/App.scss

@@ -0,0 +1,4 @@
+body {
+  background-color: #4a4a4a;
+  font-size: 160%
+}

src/App.tsx

@@ -2,7 +2,7 @@ import React, { Component } from 'react';
 
 import Header from './components/Header/Header';
 
-import './App.css';
+import './App.scss';
 
 class App extends Component {
   public render() {

src/components/Header/Header.scss

@@ -1,10 +1,7 @@
 .App-header {
+  text-align: center;
   background-color: #282c34;
-  min-height: 100px;
+  font-size: 1.6em;
-  display: flex;
+  padding: 0.5em 0;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  font-size: calc(10px + 2vmin);
   color: white;
 }