This is a clone of Disney plus with the exact look and feel built by using ReactJS and JavaScript, where React is a JavaScript library used for building complex realtime web applications and projects. React is an open-source front-end JavaScript library for building user interfaces based on UI components. It is maintained by Meta and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications. Wikipedia

The front-end of the project has been built by considering the mobile screen sizes, hence the layout of the application automatically adjusts itself to the screen size of the users.