2. Earlier, developers used div and span tags as structural elements to define sections of a page that were to be styled or managed as a group. HTML5 includes new tags that acknowledge the typical grouping that developers use in pages: That pages usually have headers, footers and navigation sectors in addition to their primary content. The section tag allows you to divide your page into sections, containing articles (the pages primary content) and asides (content that isnt a critical part of the page).ASP.NET developers need to be well-versed with HTML5 features since all of the leading browsers areaggressively supporting them and newer web applications are bound to be relying heavily on them. UsingMicrosoft ASP.NET 4.5 and Visual Studio 2012 makes building web applications using HTML 5,EcmaScript 5 and CSS 3 easier than ever.