I accidently removed the downloads stack

i went to add it back and i did but the problem is that when i click on that stack it used to show the downloads stack.pdf on the top now it shows it on the bottom instead plz someone help me so that it shows it back on the top thank you

Go to the Finder and rearrange the folder anyway you like. You can also have the Finder arrange it by Name, Date Created, etc. That's it. BTW, you don't have to keep the PDF's about stacks.

Yeah, if you right-click the folder or stack in your dock you can adjust all sorts of settings..