Thanks Cheryl & Mark.
Mark - I copied your code and added it to the new snippet as per your screenshot but it still fails to become responsive. Really appreciate you replying.
Cheryl - I may have to contact the landing page developer as well. If it’s a known issue I hope they can fix it soon. Did you use the same landing page template as the one in my link? I’m thinking I may have to change the template to one with a regular image - I’m assuming a normal image will be responsive?
Again, I’m really grateful to both of you for offering solutions.
Jake