DOM Manipulation, Event Handling, Function/Conditional Logic

I have adjusted the Project UI to my preference. I am open to hearing any changes and suggestions because this is my very first Javascript Project fully Utilizing the DOM and event handling.

I've struggled with positioning the triangle that links the three button selections due to its unusual scaling behavior with absolute position.

And as for my script, please refer to my playRound() function and button click event listener below. I believe that my code could have been much cleaner especially with the conditional statements.