menu broken when doing child theme

Hello everybody !
i m making a new child theme and the parent is travelify
So, i m creating a new css files with the lines :

/*
Theme Name: pac
Author: Grégory Molette
Template: travelify
Author URI: https://monsiteweb.com
Description: Notre premier thème WordPress !
*/

@import url(“../travelify/style.css”);
@import url(“../travelify/rtl.css”);

The problem is when i activate the theme the menu bar is broken, there is no more slide down menu, all the link of the menu appears in the menu.

Do you know how to fix that ?

Thank a lot !