create Grid.js

+import React from "react";
+import Styled from "styled-components";
+import MenuList from "./MenuList";
+import Article from "./Article";
+
+const Grid = Styled.div`
+    width: 100%;
+    display: flex;
+`;
+
+export default () => {
+  return (
+    <Grid>
+      <MenuList />
+      <Article />
+    </Grid>
+  );
+};