bootstrap img

ref : http://www.w3schools.com/bootstrap/bootstrap_ref_css_images.asp

<img> Classes

The classes below can be used to style any image:

Class	Description	Example
.img-rounded	Adds rounded corners to an image (not available in IE8)	Try it
.img-circle	Shapes the image to a circle (not available in IE8)	Try it
.img-thumbnail	Shapes the image to a thumbnail	Try it
.img-responsive	Makes an image responsive (will scale nicely to the parent element)