viewer.css setting un-namespaced body and html styles

[daniel-halldorsson]

on lines 255 - 269 of viewer.css pdf-js is setting un-namespaced body and html styles which is effecting our sites overall font size, family and body background colour.

html {
height: 100%;
width: 100%;
font-size: 10px
}

body {
height: 100%;
width: 100%;
background-color: #404040;
background-image: url(images/texture.png)
}

body, .pdfjs input, .pdfjs button, .pdfjs select {
font: message-box;
outline: 0
}