feat: change layout

src/components/Header/index.tsx

@@ -0,0 +1,11 @@
+import React from 'react';
+import { styled } from '@/styles';
+
+const StyledHeader = styled('div')({
+  height: '60px',
+  width: '100vh',
+  borderBottom: '1px solid gray',
+});
+export const Header = () => {
+  return <StyledHeader>Here is header</StyledHeader>;
+};