Hey Paula!
Happy to help! As far as finding the CSS for the sidebar, all we really need is the ids/classes for the MailChimp plugin. I like to use Chrome and find that information by right-clicking on the area I want to adjust and then going to “Inspect Element”. This brings up Chrome’s developer tools, which allow us to render temporary CSS changes on the fly:
Screenshot — https://cl.ly/0Y08293X3m2T0z3y2L2t
Screenshot — https://cl.ly/3M082j1D071L2i333Y2j
From there, I find the ids I need to add/adjust in my Style.css file under “Appearance” -> “Editor” -> “Style.css”.
As far as just a stripped down looking form, your best bet for that would be to use MailChimp’s embedded form (which is what the other page has).
How can I add my signup form to my website?: https://eepurl.com/gOGN
Another option would be to disable the other fields in your MailChimp plugin’s settings (“Settings” -> “MailChimp Setup”). At the bottom of the page, you’ll have the option to check or un-check specific fields you’d like to display. ??
One thing I would like to mention, however, is that generally we only recommend one form per page, regardless if it’s the plugin and an embedded form, two plugins, or two embedded forms (or any other combination I’ve missed).
Can I have more than one MailChimp signup form on one webpage?: https://eepurl.com/gOGD
Hopefully that helps!