Embed Youtube Video so it's responsive
I am using the latest version of Vantage and a child theme.
What is the best way of embedding a youtube video so that it's responsive?
I just want it to work in the same way as it does on the Vantage Demo https://demos.appthemes.com/?theme=vantage
under the Sprinkles Cupcakes listing in the Dessert category.
I have tried a number of the suggestions online but no no avail.