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HTML 

              
                .step-bar
  ul
    li
      .number.active 1
      .text account setup
    li 
      .number 2
      .text profiles
      .line
    li 
      .number 3
      .text details
      .line
    
h1 Create new account
form
  .account-setup.register-form
    h2 Step 1
    input(name="email" type="email" placeholder="Email")
    input(name="password" type="password" placeholder="Password")
    input(name="confirmPassword" type="password" placeholder="Confirm Password")
    .button.firstNext Next
  .user-details.register-form
    h2 Step 2
    input(name="name" type="text" placeholder="Full name")
    input(name="counrty" type="text" placeholder="Country")
    input(name="city" type="text" placeholder="City")
    .button.firstPrev Back
    .button.secondNext Next
  .finish-step.register-form
    h2 Step 3
    label(for="birth-day") Birth date
    input(name="birth-day" type="date" class="error")
    .error-text *This field is required
    label.accept-conditions(for="accept") Accept <a href="#"> terms & conditions</a>
      input(name="accept" type="checkbox")
    .button.secondPrev Back
    .button.disabled Register
!

CSS 

              
                @import url('https://fonts.googleapis.com/css?family=Roboto');
* {
  font-family: 'Roboto';
  letter-spacing: 0.05em;
  margin: 0;
  padding: 0;
}

html, body {
  text-align: center;
  height: 100%;
  background: #D09EA6; /* For browsers that do not support gradients */
  background: -webkit-linear-gradient(left top, #00659C, #6A1B9A); /* For Safari 5.1 to 6.0 */
  background: -o-linear-gradient(bottom right, #00659C, #6A1B9A); /* For Opera 11.1 to 12.0 */
  background: -moz-linear-gradient(bottom right, #00695C, #6A1B9A); /* For Firefox 3.6 to 15 */
  background: linear-gradient(to bottom right, #00695C, #6A1B9A); /* Standard syntax */
  overflow-x: hidden;
}

.step-bar {
  text-transform: uppercase;
  color: white;
  font-size: 0.8em;
  margin-top: 40px;
}

.step-bar li{
  display: inline-block;
  position: relative;
  margin: 0px 30px; 
  width: 120px;
}

.step-bar .number{
  transition: background-color 0.1s linear, color 0.1s linear;
  display: inline-block;
  position: relative;
  color: #777;
  background-color: #fff; 
  width: 20px;
  padding: 8px 5px;
  margin-bottom: 4px;
  font-weight: 700;
  z-index: 1;
}

.step-bar .line {
  background-color: #fff;
  width: 180px;
  height: 5px;
  position: absolute;
  top: 15px;
  right: 60px;
  z-index: 0;
}

.step-bar .active {
  background-color: #6A1B9A;
  color: #fff;
}

.register-form {
  display: inline-block;
  background: #fff;
  padding: 20px 30px;
  width: 300px;
  text-align: center;
  -webkit-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.3);
  -moz-box-shadow: 10px 10px 5px 0px rgba(0,0,0,0.3);
  box-shadow: 0px 0px 15px 5px rgba(0,0,0,0.3);
  border-radius: 3px;
  position: relative;
}

.error {
  border: 1px solid #E57373;
  background-color: #FFEBEE;
}

.error-text {
  text-align: left;
  padding-left: 10px;
  font-size: 0.7em;
  color: #E57373;
}

h1 {
  margin: 75px 0;
  display: block;
  color: #fff;
  font-size: 1.15em;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-weight: 200;
}

.register-form h2 {
  font-size: 1em;
  color: #777;
  font-weight: 400;
  margin-bottom: 10px;
}

.register-form input {
  padding: 15px; 
  margin: 5px 0;
  width: 260px;
}

.register-form input::placeholder {
  color: #aaa;
}

.register-form input.error::placeholder {
  color: #555;
}

.button {
  display: inline-block;
  padding: 10px 40px;
  background-color: #6A1B9A;
  color: #fff;
  margin: 25px 0  10px 0;
  user-select: none;
  cursor: pointer;
  position: relative;
}

.button:hover {
  background-color: #00897B;
}

.disabled {
  background-color: #aaa; 
}

.disabled:hover {
  background-color: #aaa; 
  cursor: default
}

.account-setup, .finish-step, .user-details {
  transition: 1s all ease-in-out;
  display: inline-block;
  position: absolute;
}

.account-setup {
  left: calc(50% - 175px);
}

.finish-step, .user-details {
  left: 1400px;
}

.line {
  transition: all 1s ease-in-out;
  background: linear-gradient(to right, #6A1B9A 50%, white 50%);
  background-size: 200% 100%;
  background-position: right bottom;
}

.line-active {
  background-position: left bottom;
}

label {
  display: block;
  text-align: left;
  font-size: 0.8em;
  padding-left: 5px;
  color: #444;
}

input[type=checkbox]{
  display: none;
}

.accept-conditions {
  margin-top: 20px;
}

input::placeholder { 
  color: black;
}


@media(max-width: 600px) {
  .step-bar {
    display: none;
  }
}
!

JS 

              
                let steps = $('.step-bar ul li');

// First step
$('.firstNext').on('click', (e) => {
   setTimeout(() => {
     $(steps[1]).find('.number').addClass('active');
   }, 1000);
  
   $(steps[1]).find('.line').addClass('line-active');
   $('.account-setup').css('left', '-4000px');
   $('.user-details').css('left', 'calc(50% - 175px)');
});

// Second step
$('.secondNext').on('click', (e) => {
  setTimeout(() => {
    $(steps[2]).find('.number').addClass('active');
  }, 1000);
  
  $(steps[2]).find('.line').addClass('line-active');
  $('.user-details').css('left', '-4000px');
  $('.finish-step').css('left', 'calc(50% - 175px)');
});

$('.firstPrev').on('click', (e) => {
  $(steps[1]).find('.number').removeClass('active');
  $(steps[1]).find('.line').removeClass('line-active');
  $('.user-details').css('left', '4000px');
  $('.account-setup').css('left', 'calc(50% - 175px)');
});

// Last step
$('.secondPrev').on('click', (e) => {
  $(steps[2]).find('.number').removeClass('active');
  $(steps[2]).find('.line').removeClass('line-active');
  $('.finish-step').css('left', '4000px');
  $('.user-details').css('left', 'calc(50% - 175px)')
});
!
999px

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