.form-holder input.user {
    background: url('../../img/user.png')no-repeat 15px 7px #fff;
    /*background: url('../../images/user.png')no-repeat 15px 7px #fff;*/
    display: block;
}
.login form input.lock {
  background: url(../images/key.png)no-repeat 15px 7px #fff;
  display: block;
}