I don’t use Facebook so I don’t know -

Why can’t you just have a group text with your family.

You can also just write your class again as some sort of additional specificity like

.myclass.myclass.myclass { color:red !important !important; }

Along with transforms being 3d or flat transform styles

Have you tried the .ics download method?

I thought that the OS would see the ics file and automatically know to open your calendar app to deal with it.

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What icons are these?