lang (language) html lang="en"
head insert
(meta) charset meta charset="utf-8"
viewport secures proper display in mobile devices
maximum-scale= 0.8 is set for Iphone

type="text/css": omit in style and js attributes

container div replaces table distribution in a simple lay-out with a side panel and a main section

audio tag needs only these unspecified attributes
On Iphone Safari, no automatic styling appears in the display
The player has to be clicked, in order to activate

container width and margin can be set to defined pixels or auto