Tic tac toe game using Vanilla JavaScript, HTML, and CSS

I decided to build this project using Vanilla JavaScript, HTML, and CSS to practice the basics and deepen my understanding of the core foundations.

The difficulties I encountered was creating the logic for the winning combinations and next round functions. I also had issues with the hover effects for the game board cells. Depending on what mark the user chooses to play as it should correctly hover either X or O, but when the game is played on a mobile screen the hover effect is removed. I'm planning on implementing the Minimax algorithm but for now the computers moves are random.

After testing my project I believe it should be working fine, but if anyone encounters any errors on their end I would appreciate the feedback. Thanks!