Rp Tutorials

forgive me if this has already been asked, but is there a certain gif or code to use to get the falling snow on a journal layout? i've seen a couple of journals with this effect but i can't find a gif of it for the life of me. i found a code on tumblr but it doesn't seem to work with ij as every time i put it in, it doesn't do anything for me. thank you in advance!