Web development involves building and maintaining websites and web applications. It requires a combination of skills, including programming, graphic design, and project management. Here are some of the key skills involved in web development:

1. HTML/CSS: HTML is the foundation of every website, providing the structure and content. CSS is used to style and layout the website’s design.
2. JavaScript: A programming language used to create dynamic and interactive elements on a web page, such as animations, pop-ups, and dropdown menus.
3. Web frameworks: These are pre-built sets of code and libraries that developers can use to speed up the development process. Popular frameworks include React, Angular, and Vue.js.
4. Backend languages: Backend languages such as PHP, Python, and Ruby are used to build the server-side of a web application.
5. Databases: Data is often stored in a database, and developers need to know how to write SQL queries to retrieve and manipulate that data.
6. Version control: Developers use tools such as Git to track changes to their code and collaborate with other developers.
7. Testing and debugging: Developers need to be able to test their code for bugs and fix them before deploying the website or application.
8. Responsive design: Websites need to be designed to be responsive and accessible on different devices, including mobile phones and tablets.
9. Search engine optimization (SEO): Developers need to understand SEO best practices and optimize websites for search engines.
10. Security: Developers need to ensure that their websites are secure, protecting user data and preventing hacking attempts.