random block layout on refresh

Hi I am making a portfolio website for my photography work. Is there a way to randomize the block layout on page refresh? I am putting only images in my block and would like to have them in random locations within the block every time the page is refreshed. it doesn't matter if the images get overlayed or blocked by one another.

https://narantsetsegkhuyagaa.squarespace.com

password: narantsetseg

this website's home page is what I am aiming for

http://chogiseok.com/index.php