There are several ways a website can be designed, and is done with the help of advanced technical and design tools, methodologies in addition some others. Professional designers have switched over from non-HTML technologies such as Adobe Flash to newest HTML5 capabilities best suiting to the modern browsers. 

In the tutorial "Importance of HTML5 in Website Designing", it has been stated that HTML5 is the revolution that the web needed. Whether you like it or not, it's going to be the future of website designing. 

Although HTML5 hasn't been fully adopted yet, it isn’t hard to use or understand. A web developer makes a good use of a PSD to HTML5 conversion service while converting a PSD design file into a reputed language such as HTML5. The tutorial affirms that W3C is a worldwide organisation that provides perfect guidelines for the development of websites.

To read this and other useful HTML tutorials visit: http://www.tutorialchip.com/tutorials/importance-of-html5-in-website-designing/