Learn to build a responsive agency/portfolio website from scratch using HTML and CSS in this comprehensive tutorial series. Master the creation of a fully functional site that adapts to all devices and screen sizes through media queries. Follow along step-by-step as you construct the HTML structure, style the header and hero area, design an about section, develop a responsive portfolio showcase, and implement a call-to-action with footer. Explore two different methods for adding a parallax effect using jQuery to enhance visual appeal. Download provided assets to practice and reinforce your learning throughout this hands-on web development journey.