In a video on YouTube, Google’s John Mueller said that the desktop version of your web pages will influence the position of your web pages in Google’s mobile search results. A user was afraid that hidden content in the mobile version of his web pages had a negative influence on the rankings:
In 2013, web design continued to evolve. Mobile devices became even more widespread. Desktop sites continue to be simple and engage the user.
With newer technologies such as HTML5 and CSS3, more design and style options are possible which results in rich, chic, and elegant sites. HTML5 allows you to watch videos without needing a plug-in such as Flash. CSS3 allows easier way to apply stylesheets to different conditions, such as browsers and screen size.
Great typography & icon fonts