Front-end development using only HTML and CSS involves creating visually appealing and user-friendly web pages using these two languages. HTML is used to define the structure and content of the web page, while CSS is used to define the layout, styling, and visual effects.

The front-end development process involves understanding the requirements of the website or application, creating a design that meets those requirements, and then converting that design into HTML and CSS code. This includes creating a layout that is responsive, meaning it can adapt to different screen sizes and devices, and ensuring that the web page is accessible to all users, including those with disabilities.