Html5is the latest revision Hypertext Markup Language for creating web pages, a markup language uses tags to describe to a browser how content should appear on the page. The latest HTML5 features include support for audio and video content as well as graphic shape elements and full integration with CSS3 (See Below). It is important to have standards when it comes to web design code so that pages are displayed correctly and appear the same in any of the many browser versions, tablets and mobile devices available.
CSS3(Cascading Style Sheets) contain code used to describe formatting elements on a webpage like font style, size and colour or position of elements. The same styles can then be applied several times to different HTML elements and so eliminate the need to repeat the same code many times on a website. CSS3 is the most recent version of the Style Sheet language and integrates seamlessly with HTML5.