<section class="parallax-feature">
  <div class="starfield"></div>
  <i class="fa fa-paper-plane"></i>
  <div class="feature-title">
    SUBSCRIBE TO OUR NEWSLETTER
  </div>
  <div class="feature-input">
       <div id="subscribe">
            <input type="text" class="enteremail error" name="EMAIL" id="subscribe-email" placeholder="Enter your email address" spellcheck="false">
            <button type="submit" id="signup-button" class="signup-button">Submit</button>
            <label for="subscribe-email" class="subscribe-message error" style="">
              <i class="fa fa-warning"></i>
              <span class="message-content"></span>
            </label>
       </div>
  </div>
</section>

html, body {
  height: 100%;
  width: 100%;
}
.starfield { height:100%; left:0; position:absolute; top:0; width:100%; z-index:0;}
*, *:before, *:after {
  box-sizing: border-box;
  margin:0; padding:0;
}
body{
  padding: 0;
  margin: 0;
  font-family: 'Open Sans', sans-serif;
}

.parallax-feature{
  /* z-index: -2; */
  padding: 80px;
  text-align: center;
  min-height: 100vh;
  background: url("https://download.unsplash.com/photo-1422640805998-18a4dd89bec2") center center no-repeat;
    background-size: cover;
    i.fa.fa-paper-plane {
      font-size: 29px;
      color: white;
      padding: 15px;
    }
  .feature-title{
    font-family: "Iceberg", sans-serif;
    font-size: 20px;
    font-weight: 300;
    color: #FFFFFF;
    margin: 0px;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 0 0 40px 0;
    font-family: "Iceberg", sans-serif;
  }
}

.enteremail {
  font-family: 'Open Sans', sans-serif;
  height: 55px;
  word-spacing: 1px;
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 1px;
  width: 70%;
  outline: none;
  background-color: rgba(255, 255, 255, 0.1);
  border: solid 1px rgba(255, 255, 255, 0.17);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 400;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

.signup-button {
  width: 20%;
  font-family: 'Open Sans', sans-serif;
  height: 55px;
  /* background-color: rgba(22, 182, 234, 0.52); */
  background-color: #131313;
  /* background-color: #303e49; */
  border: none;
  outline: none;
  position: relative;
  float: none;
  font-size: 14px;
  border-radius: 0px;
  font-weight: 700;
  color: rgba(255, 255, 255, 1);
  border: none;
  cursor: pointer;
  z-index: 100;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-appearance: none;
  -webkit-background-clip: padding-box;
  -webkit-transition: all 0.3s ease-in-out !important;
  -moz-transition: all 0.3s ease-in-out !important;
  -ms-transition: all 0.3s ease-in-out !important;
  -o-transition: all 0.3s ease-in-out !important;
  transition: all 0.3s ease-in-out !important;
}
label.subscribe-message {
  height: 2.5em;
  padding: 10px 20px;
  color: #fff;
  font-size: 13px;
  float: none;
  top: 0;
  display: block;
}
label.subscribe-message{
  display: none;
}
label.error i {
  color: #16b6ea;
}

.parallax-background {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: -1;
  background-attachment: fixed;
  background-clip: border-box;
  background-origin: padding-box;
  background-repeat: no-repeat;
  background-position: center top;
  background-color: rgba(0, 0, 0, 0.3);
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

.parallax {
  position: relative !important;
  z-index: 1 !important;
  background-repeat: no-repeat !important;
  background-attachment: fixed !important;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}


.parallax-feature::after{
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  background-image: url('http://mountaintheme.com/themeforest/mountain/demo-3/images/overlay.png');
  background-repeat: repeat;
  background-color: rgba(95,96,97,0.4);
  z-index: -1;
}

/*
https://tympanus.net/Development/ProgressButtonStyles/
*/
function validateEmail(email) {
    var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
    return re.test(email);
}
$("#signup-button").click(function(e){
  var $email = $("#subscribe-email").val();
  if(validateEmail($email)){
    //alert("Valid email!");
    $(".message-content").html("Now you are subscribed!");
  }else{
    //alert("Invalid email!");
    $(".message-content").html("E-mail address is not valid.");
  }
  
  $(".subscribe-message").fadeIn(1500).css("display","block").delay(2000).fadeOut(500);
  e.preventDefault();
});