u/No_Arachnid207

Powder Room

Planning to remodel the powder room. We removed our old tiles and found the floor like this where we have space at the edge after removing the side board.
My questions are:

1. Are these sides supposed to have space in there running around all the walls? I thought the floor sits till the end.
2. If this is how it is supposed to be like then how do we plan to tile? Do we put our tiles the edge of the floor or to the end till the wall? I am asking this because all the YouTube videos I have seen, I have never seen a space like this and side boards sit on top on the tiles not behind like I saw while removing my tiles.
   Can someone please guide and help as this is our first bathroom DIY. Thank you in advance!

Planning to remodel the powder room. We removed our old tiles and found the floor like this where we have space at the edge after removing the side board.
My questions are:

1. Are these sides supposed to have space in there running around all the walls? I thought the floor sits till the end.
2. If this is how it is supposed to be like then how do we plan to tile? Do we put our tiles the edge of the floor or to the end till the wall? I am asking this because all the YouTube videos I have seen, I have never seen a space like this and side boards sit on top on the tiles not behind like I saw while removing my tiles.
   Can someone please guide and help as this is our first bathroom DIY. Thank you in advance!