Yellow Flowers

These small flowers are slowly taking over the area next to my deck.
I really like them and I believe they are phlox. I remember planting some flowers there but thought they had died, so they are a pleasant surprise. It is mostly gravel underneath due to the drains but the flowers seem to like the area. I am going to try and relocate a few to the other side of the steps to see if I can get them on both sides. I don't recall ever seeing the tall yellow flowers in the lower pic, maybe they came around because they just like being all yellow together. :)