Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
When you click this link Gmail.com
At the top right, in small letters.. You should see the words sign in.
Or, in the center of the screen it may be showing you a sign in screen. Underneath that sign in screen clickk " sign in with a different account"
Whether you click sign in at the top right, or you click sign in with a different account. That will allow you to sign in.
If you run into any issues or cannot see either of those options. Then you may have a display issue with your browser. So whether these suggestions work or not please send a reply and I will assist you further.
I strive to provide great service, and greatly appreciate a rating of excellent ( 5 stars ) selected and submitted below this answer or at the top right of the screen. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.