Board Thread:Support Requests - Getting Technical/@comment-876677-20151218105403/@comment-1757994-20151218114019

Whether you're logged in or not, your personal CSS applies only to what you see, not to how other people see your pages.

You can use in-line CSS with  attributes.

There are many things that cannot be done with in-line styles. Also, using a lot of in-line styling can get pretty ugly. However, everyone (except mobile users) would use those in-line styles to view your page.