Add to ORKGThe thesis is about current technologies and optimalization used in developing responsive websites. It summarizes current state and gives small prediction where the future of responsive design is going. This is analysed on 4 news websites ihned.cz, novinky.cz, blesk.cz, extra.cz which are analysed from point of view of areas, which have major influence on user's surfing experience. Websites are compared to each other using criteria, which correspond to each of those areas. Thesis also proposes a solution to each of the bigger mistakes, which each website makes. Those mistakes are in the coclusion put in context of other websites and used to reach a general recommendation, which solutions correct them and are therefore suitable to use in dev...