.loader {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url(../img/ajax_loader.gif) 50% 50% no-repeat rgb(249,249,249);
    opacity: .8;
}
.img-thumbnail{
    width: 100px;
    height: 100px;
    border-radius: 53px;
  }
  .error{
    border-color: red;
}