hudsonvalleywebdesign

Ditch MAMP altogether, You are on a MAC after all… OSX has Apache web server built in! Why download and install an app that also has Apache web server?

https://mallinson.ca/osx-web-development/
with a few tweaks you can run WordPress sites from your sites folder and not worry about localhost:888

Just nav to https://foldername.dev where foldername is the name of your WordPress folder.

You would have to create a backup it does not do it by itself.

Why bother with MAMP? OSX comes with Apache web server built in. With a few tweaks you can run WordPress sites directly from your sites folder:
https://mallinson.ca/osx-web-development/

That would be a media query
https://www.w3schools.com/css/css_rwd_mediaqueries.asp

css:

.hidden-item { display:none;}
@media(min-width: 550px) and (max-width: 990px {
.hidden-item { display: block; }
}

I would call that vertical tabs

https://dbtek.github.io/bootstrap-vertical-tabs/demo.html

https://www.wonderplugin.com/wordpress-tabs/vertical-wordpress-tabs-id4/