New technologies are developed to create things easier and easier. With the emergence about HTML5 and CSS3 the website development has become very easier. HTML5 answers the vital needs in the modern web and solves numerous issues that were not covered in the earlier versions of HTML. It's also supported by the concept giants like Apple and also Google. It indicates that HTML5 aims to include web technologies and transportable platforms. This is precisely why web developers and online marketers have started looking beyond the regular PSD to HTML /XHTML and even PSD to CSS remodeling. One of the basic aims of HTML5 should be to support web based cellular phones to provide an beneficial medium for full fledged world-wide-web application services. This paves the way in which for switching from classic desktop PCs to a lot more lightweight and convenient hand-held technology. The devices like netbooks, tablets etc are way more convenient and satisfy the particular contemporary requirements in a far greater way. Both HTML5 and CSS3 have some amazing list of features which have been useful for Mobile web. This is the good reason that both these technologies have become preferred for web application development as a rule and the mobile Web in particular. Some of the brand-new HTML5 features that deserve the many attention areHTML5 supports built in audio and video exploding and playback. This features saves your users from installing third-party Thumb or audio players to make use of multimedia capabilities. It has an offline data storage option. With the help of this feature, web applications can intensively use data caching about the client抯 side. This makes the consumer experience smoother and also enhances the application availability. It also has an extended drag together with support system. The web sockets earn the interactive connections to the server really easy. It provides lots of benefit to chat-like job applications. The extended drawing capabilities(canvas element) is very useful for flowcharts, 2d games, stunning graphic interfaces which extend beyond the traditional HTML and CSS. The Geolocation feature provides location specific information for users depending on Wi-Fi signals or GPS NAVIGATION, which can then provide you with users with content tightly related to their physical locations. The attractive options that come with CSS3 are as followsEmbedded tailor-made fonts Translucent page aspects Multiple background pictures Rounded edges for rectangular locations Shadows for fonts and even regions Transform & Disruption (currently supported by Firefox and chrome)Therefore, it is clear which will both HTML5 and CSS3 offer a great possibility for making more interactive and usefulness rich web resources. There isn't any doubt that HTML5 based mobile applications will be more dynamic and integrated than ever.