HTML and CSS Reference
Unless you have a good reason, it is advisable to choose UTF-8 as the encoding. It is also
important that you add this otherwise you may open your web application to a cross site
scripting attack using UTF-7.
With Internet Explorer it may be useful to also set the following meta value:
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
Internet Explorer lets users specify the compatibility mode for a document (since
it supports backwards compatibility). This will guarantee that IE will use the
latest mode for HTML5.