Please share your web shop url & password.
I can do that but I need your shop access please email me
Style changes would be added to your themes stylesheet.
This file is found in the Assets folder and typically called theme.scss.liquid, timber.scss.liquid, main.scss.liquid, styles.scss.liquid, etc.
I've will add the CSS in theme.scss.liquid but what else needs to be edited? This is the effect I want. I can add this CSS and also upload the wave image but what else needs to be edited for the effect?