For the posters, I found a beautiful poster on Canva, so I tried to modify some basics in it to make it as I wanted. Then, I placed the logo at the top because it is the most important thing in the poster from my perspective. I tried to divide the spaces, sizes, and colors based on importance (the statements were given to us in advance). One of the most important points for me was not to use margins because using them strains the eyes. And this was the final design.