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              <!-- Material Design inspired Hosted Fields theme -->

<!-- Icons are taken from the material design library https://github.com/google/material-design-icons/ -->

<!--[if IE 9]>
<style>

.panel {
  margin: 2em auto 0;
}

</style>
<![endif]-->

<form id="cardForm">
  <div class="panel">
    <header class="panel__header">
      <h1>Card Payment</h1>
    </header>

    <div class="panel__content">
      <div class="textfield--float-label">


        <label class="hosted-field--label" for="card-number"><span class="icon">
         <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24"><path d="M0 0h24v24H0z" fill="none"/><path d="M20 4H4c-1.11 0-1.99.89-1.99 2L2 18c0 1.11.89 2 2 2h16c1.11 0 2-.89 2-2V6c0-1.11-.89-2-2-2zm0 14H4v-6h16v6zm0-10H4V6h16v2z"/></svg></span> Card Number 
        </label>
        <div id="card-number" class="hosted-field"></div>
      </div>

      <div class="textfield--float-label">

        <label class="hosted-field--label" for="expiration-date">
           <span class="icon">
          <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24"><path d="M9 11H7v2h2v-2zm4 0h-2v2h2v-2zm4 0h-2v2h2v-2zm2-7h-1V2h-2v2H8V2H6v2H5c-1.11 0-1.99.9-1.99 2L3 20c0 1.1.89 2 2 2h14c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 16H5V9h14v11z"/></svg>
         </span> 
          Expiration Date</label>
        <div id="expiration-date" class="hosted-field"></div>
      </div>


      <div class="textfield--float-label">
        <label class="hosted-field--label" for="cvv">
          <span class="icon">
            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24"><path d="M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zm-6 9c-1.1 0-2-.9-2-2s.9-2 2-2 2 .9 2 2-.9 2-2 2zm3.1-9H8.9V6c0-1.71 1.39-3.1 3.1-3.1 1.71 0 3.1 1.39 3.1 3.1v2z"/></svg>
            </span>
            CVV</label>
        <div id="cvv" class="hosted-field"></div>
      </div>

      <div class="textfield--float-label">

        <label class="hosted-field--label" for="postal-code">
           <span class="icon">
          <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24">
    <path d="M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7zm0 9.5c-1.38 0-2.5-1.12-2.5-2.5s1.12-2.5 2.5-2.5 2.5 1.12 2.5 2.5-1.12 2.5-2.5 2.5z"/></svg>
         </span> 
          Postal Code</label>
        <div id="postal-code" class="hosted-field"></div>
      </div>
    </div>

    <footer class="panel__footer">
      <button class="pay-button">Pay</button>
    </footer>
  </div>
</form>

<!-- Load the required client component. -->
<script src="https://js.braintreegateway.com/web/3.9.0/js/client.min.js"></script>

<!-- Load Hosted Fields component. -->
<script src="https://js.braintreegateway.com/web/3.9.0/js/hosted-fields.min.js"></script>
            
          
!
            
              /*--------------------
SHARED VARIABLES
--------------------*/
$red: #E91E63;
$blue: #3F51B5;
$grey: #EAE8E9;
$grey2: #f3f3f3;
$white: #FFF;

/*--------------------
GENERAL
--------------------*/

*,
*:before,
*:after {
  box-sizing: inherit;
}

html {
  box-sizing: border-box;
  height: 100%;
  overflow: hidden;
}

body {
  background: #f2f2f2;
  font-family: 'Roboto', verdana, sans-serif;
  height: 100%;
}

h1 {
  font-size: 1.5em;
  font-weight: 100;
}

#cardForm {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}


/*--------------------
PANEL FORM
--------------------*/

.panel {
  background: $white;
  width: 80%;
  box-shadow: 0 2px 2px 0 rgba(0, 0, 0, .16), 0 0 2px 0 rgba(0, 0, 0, .12);
}

.panel__header {
  background: $blue;
  color: $white;
}

.panel__header,
.panel__footer {
  padding: 1em 2em;
}

.panel__footer {
  background: $grey2;
}

.panel__content {
  padding: 1em 2em;
  overflow: hidden;
}

.textfield--float-label {
  width: 50%;
  float: left;
  display: inline-block;
}

.hosted-field--label {
  transform: translateY(0.4em);
  font-size: 1.125em;
  line-height: 32px;
  transition: all .15s ease-out;
  display: block;
  width: 100%;
  font-weight: 400;
  overflow: hidden;
  margin-bottom: 0.5em;
  &.label-float {
    height: 33px;
    margin-bottom: -1px;
    transform: translate(0, 0);
    font-size: 12px;
    line-height: 15px;
    text-overflow: ellipsis;
    color: #2196F3;
    transition: all .15s ease-out
  }
  &.filled {
    @extend .label-float;
    color: rgba(0, 0, 0, .54);
  }
  &.invalid {
    @extend .label-float;
    color: #F44336;
  }
}

span.icon {
  position: relative;
  top: 0.2em;
  margin-right: 0.2em;
}

svg {
  fill: #333;
}

.hosted-field {
  height: 32px;
  margin-bottom: 1em;
  display: block;
  background-color: transparent;
  color: rgba(0, 0, 0, .87);
  border: none;
  border-bottom: 1px solid rgba(0, 0, 0, .26);
  outline: 0;
  width: 100%;
  font-size: 16px;
  padding: 0;
  box-shadow: none;
  border-radius: 0;
  position: relative;
}

.pay-button {
  background: #E91E63;
  color: #fff;
  margin: 0 auto;
  border: 0;
  border-radius: 3px;
  padding: 1em 3em;
  font-size: 1em;
  text-transform: uppercase;
  box-shadow: 0 0 2px rgba(0, 0, 0, .12), 0 2px 2px rgba(0, 0, 0, .2);
}


/*--------------------
BT HOSTED FIELDS SPECIFIC 
--------------------*/

.braintree-hosted-fields-focused {
  border-bottom: 2px solid $blue;
  transition: all 200ms ease;
}

.braintree-hosted-fields-invalid {
  border-bottom: 2px solid $red;
  transition: all 200ms ease;
}


/*---------------------
Media Queries
----------------------*/

@media (max-width: 600px) {
  html {
    overflow: auto;
  }
  #cardForm {
    height: auto;
    margin: 2em;
    font-size: 13px;
  }
  .panel {
    width: 100%;
  }
  .textfield--float-label {
    width: 100%;
    float: none;
    display: inline-block;
  }
  .pay-button {
    width: 100%;
  }
}
            
          
!
            
              braintree.client.create({
  authorization: 'sandbox_g42y39zw_348pk9cgf3bgyw2b'
}, function(err, clientInstance) {
  if (err) {
    console.error(err);
    return;
  }

  braintree.hostedFields.create({
    client: clientInstance,
    styles: {
      'input': {
        'font-size': '16px',
        'font-family': 'roboto, verdana, sans-serif',
        'font-weight': 'lighter',
        'color': 'black'
      },
      ':focus': {
        'color': 'black'
      },
      '.valid': {
        'color': 'black'
      },
      '.invalid': {
        'color': 'black'
      }
    },
    fields: {
      number: {
        selector: '#card-number',
        placeholder: '1111 1111 1111 1111'
      },
      cvv: {
        selector: '#cvv',
        placeholder: '111'
      },
      expirationDate: {
        selector: '#expiration-date',
        placeholder: 'MM/YY'
      },
      postalCode: {
        selector: '#postal-code',
        placeholder: '11111'
      }
    }
  }, function(err, hostedFieldsInstance) {
    if (err) {
      console.error(err);
      return;
    }

    hostedFieldsInstance.on('focus', function (event) {
      var field = event.fields[event.emittedBy];
      
      $(field.container).next('.hosted-field--label').addClass('label-float').removeClass('filled');
    });
    
    // Emulates floating label pattern
    hostedFieldsInstance.on('blur', function (event) {
      var field = event.fields[event.emittedBy];
      
      if (field.isEmpty) {
        $(field.container).next('.hosted-field--label').removeClass('label-float');
      } else if (event.isValid) {
        $(field.container).next('.hosted-field--label').addClass('filled');
      } else {
        $(field.container).next('.hosted-field--label').addClass('invalid');
      }
    });
    
    hostedFieldsInstance.on('empty', function (event) {
      var field = event.fields[event.emittedBy];

      $(field.container).next('.hosted-field--label').removeClass('filled').removeClass('invalid');
    });
    
    hostedFieldsInstance.on('validityChange', function (event) {
      var field = event.fields[event.emittedBy];

      if (field.isPotentiallyValid) {
        $(field.container).next('.hosted-field--label').removeClass('invalid');
      } else {
        $(field.container).next('.hosted-field--label').addClass('invalid');  
      }
    });

    $('#cardForm').submit(function (event) {
      event.preventDefault();

      hostedFieldsInstance.tokenize(function (err, payload) {
        if (err) {
          console.error(err);
          return;
        }

        // This is where you would submit payload.nonce to your server
        alert('Submit your nonce to your server here!');
      });
    });
  });
});
            
          
!
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