Front-end development focuses on the user interface and experience of websites and applications. A front-end developer is responsible for designing and implementing visual and interactive elements, ensuring responsiveness across browsers, collaborating with designers, and enhancing interactivity. Core skills include proficiency in HTML, CSS, JavaScript, responsive design, version control, and problem-solving. Common tools are text editors, browser developer tools, version control systems, and frameworks. Front-end development involves using HTML for structure, CSS for styling, JavaScript for interactivity, and responsive design principles for adapting layouts across devices.