hi julia altitude. I love your last name so much, it makes me feel high when I read it.
I’m gonna bet a slice of keto pizza and a Liter of Pellegrino mineral water that…
… the name of the class has changed, and you are using the name of the first page by mistake.
Also, know that a Class applies to ALL ELEMENTS on the page that have that class. If you build a second landing page that doesn’t have that same element with the same class name, your custom CSS will be referring to something that doesn’t exist (or the name changed).
For using custom CSS on SPECIFIC elements, better to use the ID.
Best analogy to understand when to use “ID” vs “Class” is pretending to be a kindergarten school teacher.
When you say “class”, all the kids pay attention. When you say “ID”, you are calling the name of a specific kid in the class. You have to be careful not to walk into another teacher’s classroom and use “class” or “ID” when the names are all different.
Another pitfall is that classes start with a dot, while ID starts with the pound symbol. Careful not to mix those up.
There can be other CSS pitfalls. If none of the above advice works, I’ll have to ask for deeper info from you, including screen capture for faster diagnosis.
I hope you fix this, and run your campaign through your landing page, and become filthy rich. Later, gator!