.alignleft{margin:20px auto; display:block; text-align:center;}
.alignright{margin:20px auto; display:block; text-align:center;}
.aligncenter{margin:20px auto; display:block; text-align:center;}
.aligncenter .img-responsive {margin: 20px auto;}
.alignright .img-responsive {margin: 20px auto;}
.alignleft .img-responsive {margin: 20px auto;}