Wedding card/gift for preschool teacher?

I am a first time mom, and my daughter just started preschool in September. Her teacher just got married-is it expected/appropriate to get her a card and a gift? What is an appropriate gift or gift amount? I don’t want to be the only parent giving a gift, or the only one not giving, but I just have zero clue what is appropriate or expected in this situation. I googled but all the info seems to be about holiday or end of year gifts, or gifts from an entire class.

I guess while I’m here I’ll ask-do you do holiday gifts for teachers? End of year gifts?