For lighting a match, it is ideal if the striker is on a firm surface.
If striker and box become wet, the striker will still work, but needs to dry first so that the surface is once again firm. Use a spare striker until then.
If match becomes we, just wipe dry before use.
To prevent fire, keep burning candle within sight. Never burn a candle on or near anything that can catch fire. Keep out of reach of children and pets.