How to bring up the menu on electro theme please ?

Hi i want to bring up and freeze my menu like the electro theme for woocommerce. I have already list my categories for my menu all departments but i can only show him when i click on. I want to freeze him like this preview site https://preview.themeforest.net/item/electro-electronics-store-woocommerce-theme/full_screen_preview/15720624?_ga=2.226200088.324946938.1586445403-1562280369.1586445403.
Thank you

Hi,

Contact with your purchase item author @MadrasThemes right here as a comments

Thanks!

thanks you very well