Ajout des feuilles de styles

src/main.js

@@ -1,7 +1,7 @@
 // This is the main.js file. Import global CSS and scripts here.
 // The Client API can be used here. Learn more: gridsome.org/docs/client-api
 import DefaultLayout from '~/layouts/Default.vue'
-import '~/css/print.css'
+import '~/css/print.scss'
 
 export default function (Vue, { router, head, isClient }) {
   // Set default layout as a global component