We study design and development on behalf of Jellyfish Designers the corporate website of Cosmos, as part of an extensive corporate identity. The website showcases the quality characteristics of facilities and products, offering data and information on raw materials, production methods, and everything that contributes to the unique quality. A modern website, with static and dynamic content, serving an expanded range of objectives. Staying current with the requirements of the present day, we designed and developed a fully responsive website, mobile friendly that is fully functional on every desktop, tablet or smartphone screen resolution, offering a great user experience, regardless of the visitor's device. Emphasis is given on mobile users as they represent a large percentage of the website visitors.