Project Overview: The goal of this project is to design and develop a C2C-based commerce site for CS:GO items, allowing users to buy and sell in-game skins, weapons, and other related merchandise. The website will feature a user-friendly interface that makes it easy for buyers and sellers to navigate and complete transactions securely. Key Features: User registration and login: Users can create an account or log in using their existing Steam account credentials. (LOG İN open steam ıd) Steam OpenID is a type of authentication system used by the popular online gaming platform, Steam. It allows third-party websites and applications to authenticate users based on their Steam accounts, without requiring them to create a separate account or share their login credentials. When a user logs into a website or application using Steam OpenID, they are redirected to the Steam website, where they are prompted to log in with their Steam account credentials. Once they have authenticated themselves, the Steam website generates a unique identifier, or token, which is returned to the third-party site or application. This token is then used to confirm the user's identity and grant them access to the site or application. Using Steam OpenID can help streamline the authentication process for users, as well as provide an additional layer of security by allowing them to authenticate without having to share their login credentials. Additionally, it can be a convenient option for developers who want to integrate with Steam, as it provides a standardized authentication system that is widely used and well-documented.