How do you scroll down in Gitbash?

Working on my SSH on gitbash. On the part where I type in vim ~/.ssh/config It's completely blank so I enter the info below and want to save. How do I scroll down to --Insert-- to type in ":wq" to save it? I tried the tab button, pg dn, enter, arrow button. Host * AddKeysToAgent ... IdentityFile ... ~ ~ ~ --Insert-