html,body{height:100%}body{display:-ms-flexbox;display:flex;-ms-flex-align:center;align-items:center;padding-top:40px;padding-bottom:40px;background-color:#f2f2f2}.fully-centered{width:100%;max-width:330px;padding:15px;margin:auto}.img-thumbnail{max-width:100%;max-height:100%}