Shell.Explorer.2 renders IE 7 and doesn't support HTML5 and CSS3.
There is some script with another browser, that support html5 and css3?
and run: IE_EmbeddedHTML5Example.au3
When you end checking this example.....
then try to use: _IE_EmbeddedSetBrowserEmulation() in your own script like this was used in IE_EmbeddedHTML5Example.au3
Global $g_iWidth = @DesktopWidth, $g_iHeight = @DesktopH