perf: reduce build size + add next-secure-headers

pages/_app.tsx

@@ -8,7 +8,6 @@ import 'tailwindcss/tailwind.css'
 import '@fontsource/montserrat/400.css'
 import '@fontsource/montserrat/500.css'
 import '@fontsource/montserrat/600.css'
-import '@fontsource/montserrat/700.css'
 
 const universalCookie = new UniversalCookie()
 

pages/_document.tsx

@@ -9,9 +9,9 @@ import Document, {
 
 class MyDocument extends Document {
   static async getInitialProps(
-    ctx: DocumentContext
+    context: DocumentContext
   ): Promise<DocumentInitialProps> {
-    const initialProps = await Document.getInitialProps(ctx)
+    const initialProps = await Document.getInitialProps(context)
     return initialProps
   }