Ricardo Zea hails originally from Medelln, Colombia. He is a passionate and seasoned full-stack designer who is now located in Dayton, Ohio, USA. He is always looking for ways to level up his skills and those around him. Constantly wondering how things are made on the Web, how they work, and why, have made Ricardo a very technical designer, allowing him to explain to others the intricacies of design and the technicalities of the Web in ways that are very easy to understand and assimilate. Ricardo has a master's degree in publicity and advertising and has deep passion for understanding human behavior. He also has a fiercely competitive PC gaming hunger. Together, all this has allowed him to switch from the creative side of the brain to the rational side very easily, allowing him to visualize and create technically sound web and mobile designs that are responsive, perform well, and convey the proper message through design. Ricardo is the author of Mastering Responsive Web Design, Packt Publishing. He's also the organizer of the CodePen Dayton meetup group. He's a member of the Dayton web developers and UX Dayton meetup groups. He's also one of the first members of SitePoint's Ambassadors program. He's also the author of the monthly web design and development newletter Level Up!. He was also a technical reviewer for Sass and Compass, Designers Cookbook, and Sass Essentials, all by Packt Publishing. For several years, he was also a Flash and CorelDRAW professor at different universities in his home country, Colombia. Ricardo has 15 years of experience in web design and 20 years of experience in visual and graphic design.