Image width with percentage CSS

Image width 70%

HTML

<img class="style1" src="http://farm5.staticflickr.com/4033/4652804371_075f4c54ea_o.jpg" alt="Ambitious Life by COLDFIRE" />

CSS Style 1 - Image width 70%

img.style1{
	width:70%;
	height:auto;
	border:solid 3px #f7f7f7;
}

Image width 40%

HTML

<img class="style2" src="http://farm5.staticflickr.com/4033/4652804371_075f4c54ea_o.jpg" alt="Ambitious Life by COLDFIRE" />

CSS Style 2 - Image width 40%

img.style1{
	width:40%;
	height:auto;
	border:solid 3px #f7f7f7;
}