"every" and "all" what is the difference in their meaning?

[مسك الختام]

Both can be used to talk about members of a group.

Every + Singular
Every child in the building received a present.
Every question has an answer.
Every sometimes means 'without exception'

All + Plural
All Children need to be in bed early.
All (the) questions need to be answered in the correct place on the sheet.

All is used with uncountable nouns.
I like all food. (every is not possible in this case)