Bootstrap Login form layered


	<div class="container">
	<div class="login-container">
            <div id="output"></div>
            <div class="avatar"></div>
            <div class="form-box">
                <form action="" method="">
                    <input name="user" type="text" placeholder="username">
                    <input type="password" placeholder="password">
                    <button class="btn btn-info btn-block login" type="submit">Login</button>
                </form>
            </div>
        </div>
        
</div>
	<script type="text/javascript"></script>

    body{background: #eee url(http://subtlepatterns.com/patterns/paper.png);}
html,body{
    position: relative;
    height: 100%;
}

.login-container{
    position: relative;
    width: 300px;
    margin: 80px auto;
    padding: 20px 40px 40px;
    text-align: center;
    background: #fff;
    border: 1px solid #ccc;
}

#output{
    position: absolute;
    width: 300px;
    top: -75px;
    left: 0;
    color: #fff;
}

#output.alert-success{
    background: rgb(25, 204, 25);
}

#output.alert-danger{
    background: rgb(228, 105, 105);
}


.login-container::before,.login-container::after{
    content: "";
    position: absolute;
    width: 100%;height: 100%;
    top: 3.5px;left: 0;
    background: #fff;
    z-index: -1;
    -webkit-transform: rotateZ(4deg);
    -moz-transform: rotateZ(4deg);
    -ms-transform: rotateZ(4deg);
    border: 1px solid #ccc;

}

.login-container::after{
    top: 5px;
    z-index: -2;
    -webkit-transform: rotateZ(-2deg);
     -moz-transform: rotateZ(-2deg);
      -ms-transform: rotateZ(-2deg);

}

.avatar{
    width: 100px;height: 100px;
    margin: 10px auto 30px;
    border-radius: 100%;
    border: 2px solid #aaa;
    background-size: cover;
}

.form-box input{
    width: 100%;
    padding: 10px;
    text-align: center;
    height:40px;
    border: 1px solid #ccc;;
    background: #fafafa;
    transition:0.2s ease-in-out;

}

.form-box input:focus{
    outline: 0;
    background: #eee;
}

.form-box input[type="text"]{
    border-radius: 5px 5px 0 0;
    text-transform: lowercase;
}

.form-box input[type="password"]{
    border-radius: 0 0 5px 5px;
    border-top: 0;
}

.form-box button.login{
    margin-top:15px;
    padding: 10px 20px;
}

.animated {
  -webkit-animation-duration: 1s;
  animation-duration: 1s;
  -webkit-animation-fill-mode: both;
  animation-fill-mode: both;
}

@-webkit-keyframes fadeInUp {
  0% {
    opacity: 0;
    -webkit-transform: translateY(20px);
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    -webkit-transform: translateY(20px);
    -ms-transform: translateY(20px);
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    -webkit-transform: translateY(0);
    -ms-transform: translateY(0);
    transform: translateY(0);
  }
}

.fadeInUp {
  -webkit-animation-name: fadeInUp;
  animation-name: fadeInUp;
}

    

	$(function(){
var textfield = $("input[name=user]");
            $('button[type="submit"]').click(function(e) {
                e.preventDefault();
                //little validation just to check username
                if (textfield.val() != "") {
                    //$("body").scrollTo("#output");
                    $("#output").addClass("alert alert-success animated fadeInUp").html("Welcome back " + "<span style='text-transform:uppercase'>" + textfield.val() + "</span>");
                    $("#output").removeClass(' alert-danger');
                    $("input").css({
                    "height":"0",
                    "padding":"0",
                    "margin":"0",
                    "opacity":"0"
                    });
                    //change button text 
                    $('button[type="submit"]').html("continue")
                    .removeClass("btn-info")
                    .addClass("btn-default").click(function(){
                    $("input").css({
                    "height":"auto",
                    "padding":"10px",
                    "opacity":"1"
                    }).val("");
                    });
                    
                    //show avatar
                    $(".avatar").css({
                        "background-image": "url('http://api.randomuser.me/0.3.2/portraits/women/35.jpg')"
                    });
                } else {
                    //remove success mesage replaced with error message
                    $("#output").removeClass(' alert alert-success');
                    $("#output").addClass("alert alert-danger animated fadeInUp").html("sorry enter a username ");
                }
                //console.log(textfield.val());

            });
});