You’ll notice that the “5” is conspicuously missing from the declaration. The doctype can be written in uppercase, lowercase, or mixed case.
With the advent of HTML5, those indecipherable eyesores are gone and now all you need is this: Many years ago, the doctype declaration was an ugly and hard-to-remember mess, often specified as “XHTML Strict” or “HTML Transitional”. The doctype should always be the first item at the top of any HTML file. In the case of HTML files, it means the specific version and flavor of HTML. A doctype is simply a way to tell the browser - or any other parser - what type of document it’s looking at. (You can view stats on browser usage and support for HTML5 features in heneral on the site.)If you really need to support ancient browsers, though, you can still use the trusty, a very simple piece of JavaScript originally developed by John Resig.Your HTML5 template needs to start with a document type declaration, or doctype. That means (you guessed it) the new HTML5 elements.The good news is that, these days, usage of IE has dropped right off, with IE11 having fallen to around 2.7% global usage (as of 2018), and versions prior to that virtually having dropped off the map. This includes not only our imagined elements, but also any elements that had yet to be defined at the time those browser versions were developed. Manuale per patente nautica download google drive.
These mystery elements were seen by the rendering engine as “unknown elements,” so you were unable to change the way they looked or behaved. Prior to version 9, IE prevented unrecognized elements from receiving styling. If you had an HTML document with a recipe tag (or even a ziggy tag) in it, and your CSS attached some styles to that element, nearly every browser would proceed as if this were totally normal, applying your styling without complaint.Of course, such a hypothetical document would fail to validate and may have accessibility problems, but it would render correctly in almost all browsers - the exception being old versions of Internet Explorer (IE).