Blink and Webkit cannot scale SVG

Chrome cannot scale SVG vertically or horizontally, however if you try the same code in Firefox you will see a vertical strech

by Génesis García Morilla

HTML

<img id="a" src="http://upload.wikimedia.org/wikipedia/commons/b/b0/NewTux.svg">

<img src="http://upload.wikimedia.org/wikipedia/commons/b/b0/NewTux.svg"width="50px" height="100px">

<div></div>

CSS

#a {
    width: 50px;
    height: 100px;
}

div {
    width: 50px;
    height: 100px;
    background-image: url(http://upload.wikimedia.org/wikipedia/commons/b/b0/NewTux.svg);
    background-size: 50px 100px;
}