<!-- multistep form -->
<form id="multistepsform">
  <!-- progressbar -->
  <ul id="progressbar">
    <li class="active">Account Setup</li>
    <li>Personal Details</li>
    <li>Social Profiles</li>

  </ul>
  <!-- fieldsets -->
  <fieldset>
    <h2 class="fs-title">Create your account</h2>
    <h3 class="fs-subtitle"></h3>
    <input type="text" name="email" placeholder="Email" />
    <input type="password" name="pass" placeholder="Password" />
    <input type="password" name="cpass" placeholder="Confirm Password" />
    <input type="button" name="next" class="next action-button" value="Next" />
  </fieldset>

  <fieldset>
    <h2 class="fs-title">Personal Details</h2>
    <h3 class="fs-subtitle">We will never sell it</h3>
    <input type="text" name="fname" placeholder="First Name" />
    <input type="text" name="lname" placeholder="Last Name" />
    <input type="text" name="phone" placeholder="Phone" />
    <textarea name="address" placeholder="Address"></textarea>
    <input type="button" name="previous" class="previous action-button" value="Previous" />

    <input type="button" name="next" class="next action-button" value="Next" />
  </fieldset>
  <fieldset>
    <h2 class="fs-title">Social Profiles</h2>
    <h3 class="fs-subtitle">Your presence on the social network</h3>
    <input type="text" name="twitter" placeholder="Twitter" />
    <input type="text" name="facebook" placeholder="Facebook" />
    <input type="text" name="gplus" placeholder="Google Plus" />
    <input type="button" name="previous" class="previous action-button" value="Previous" />
    <input type="submit" name="submit" class="submit action-button" value="Submit" />
  </fieldset>
</form>

@import url(https://fonts.googleapis.com/css?family=Montserrat);

* {
  margin: 0;
  padding: 0;
}
html {
  height: 100%;
  background: #ffeadb;
}

body {
  font-family: montserrat, arial, verdana;
}

#multistepsform {
  width: 400px;
  margin: 50px auto;
  text-align: center;
  position: relative;

  fieldset {
    background: white;
    border: 0 none;
    border-radius: 3px;
    box-shadow: 0 0 15px 1px rgba(0, 0, 0, 0.4);
    padding: 20px 30px;
    box-sizing: border-box;
    width: 80%;
    margin: 0 10%;
    position: relative;
  }
  fieldset:not(:first-of-type) {
    display: none;
  }
  input,
  textarea {
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 3px;
    margin-bottom: 10px;
    width: 100%;
    box-sizing: border-box;
    font-family: montserrat;
    color: #2c3e50;
    font-size: 13px;
    &:focus {
      border-color: #679b9b;
      outline: none;
      color: #637373;
    }
  }

  .action-button {
    width: 100px;
    background: #ff9a76;
    font-weight: bold;
    color: #fff;
    transition: 150ms;
    border: 0 none;
    border-radius: 1px;
    cursor: pointer;
    padding: 10px 5px;
    margin: 10px 5px;
  }
  .action-button:hover,
  .action-button:focus {
    box-shadow: 0 0 0 2px #f08a5d, 0 0 0 3px #ff976;
    color: #fff;
  }
  .fs-title {
    font-size: 15px;
    text-transform: uppercase;
    color: #2c3e50;
    margin-bottom: 10px;
  }
  .fs-subtitle {
    font-weight: normal;
    font-size: 13px;
    color: #666;
    margin-bottom: 20px;
  }
  #progressbar {
    margin-bottom: 30px;
    overflow: hidden;
    counter-reset: step;
    li {
      list-style-type: none;
      color: #679b9b;
      text-transform: uppercase;
      font-size: 9px;
      width: 33.33%;
      float: left;
      position: relative;
      &:before {
        content: counter(step);
        counter-increment: step;
        width: 20px;
        line-height: 20px;
        display: block;
        font-size: 10px;
        color: #fff;
        background: #679b9b;
        border-radius: 3px;
        margin: 0 auto 5px auto;
      }
      &:after {
        content: "";
        width: 100%;
        height: 2px;
        background: #679b9b;
        position: absolute;
        left: -50%;
        top: 9px;
        z-index: -1;
      }
      &:first-child:after {
        content: none;
      }
    }
    li.active {
      color: #ff9a76;
      &:before,
      &:after {
        background: #ff9a76;
        color: white;
      }
    }
  }
}

var current_fs, next_fs, previous_fs;
var left, opacity, scale;
var animating;
$(".next").click(function () {
  if (animating) return false;
  animating = true;

  current_fs = $(this).parent();
  next_fs = $(this).parent().next();
  $("#progressbar li").eq($("fieldset").index(next_fs)).addClass("active");
  next_fs.show();
  current_fs.animate(
    { opacity: 0 },
    {
      step: function (now, mx) {
        scale = 1 - (1 - now) * 0.2;
        left = now * 50 + "%";
        opacity = 1 - now;
        current_fs.css({
          transform: "scale(" + scale + ")",
          position: "absolute"
        });
        next_fs.css({ left: left, opacity: opacity });
      },
      duration: 800,
      complete: function () {
        current_fs.hide();
        animating = false;
      },
      easing: "easeInOutBack"
    }
  );
});

$(".previous").click(function () {
  if (animating) return false;
  animating = true;

  current_fs = $(this).parent();
  previous_fs = $(this).parent().prev();
  $("#progressbar li")
    .eq($("fieldset").index(current_fs))
    .removeClass("active");

  previous_fs.show();
  current_fs.animate(
    { opacity: 0 },
    {
      step: function (now, mx) {
        scale = 0.8 + (1 - now) * 0.2;
        left = (1 - now) * 50 + "%";
        opacity = 1 - now;
        current_fs.css({ left: left });
        previous_fs.css({
          transform: "scale(" + scale + ")",
          opacity: opacity
        });
      },
      duration: 800,
      complete: function () {
        current_fs.hide();
        animating = false;
      },
      easing: "easeInOutBack"
    }
  );
});

$(".submit").click(function () {
  return false;
});