You can use them together but CSS Grid can do almost everything that flexbox can (except for reversing rows/columns and some animation) so I haven't had a use-case where I've personally used both together.
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Have not used css grid before. Do you still use flexbox when creating new things or
only css grid?
You can use them together but CSS Grid can do almost everything that flexbox can (except for reversing rows/columns and some animation) so I haven't had a use-case where I've personally used both together.