Mere looking at the countries in group F, there's no single doubt that Belgium and Croatia will qualify in the group but hopefully it's not going to be an easy fight for the both countries.
Remember there is always a chance before the final whistle blows. The first game is always a lot of surprises and maybe it can happen. Especially for Croatia vs Morocco, this match looks less one-sided. Morocco still has a chance to Draw.
They do have a chance at it but I personally feel it's still a bit difficult.
Croatia has a huge advantage in this regard but even more so given their previous record they still look very strong for Morocco.
In terms of players, it is also clear that Croatia is superior, so this possibility will be an easy win for them.