image alignment

Hey guys

i just spent hours trying to figure out how to have images align properly. Was really hoping i would not have to dive much into the code. but it’s just not working. tried using column shortcodes but no matter what i do the thumbnails on my page are not aligning with each other, they’re only “roughly” where they’re supposed to be. i’m tryint to make at least three (but ideally four) coloumns of 300 by 300 px thumbnail images. and fill up the page but the images are not in line with each other, they shift a few pixels up down or sideways. this is unbelievably unnerving. is there a simple fix to this?