bonjour j'ai un probleme, je code sur shopify en liquid et mon popup s'affiche avec un ecran noir sans possibilité de revenir en arrère à part avec un ctrl r. aidez moi svp

voici le code
Code html : Sélectionner tout - Visualiser dans une fenêtre à part
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{% if global_buy_zone == 'reco' %}
{% assign cproduct = reco_product %}
{% else %}
{% assign cproduct = product %}
{% endif %}
{% assign classic = false %}
{% if global_buy_zone == 'classic' %}
{% assign classic = true %}
{% endif %}
 
{% comment %}PRESTATION CASE{% endcomment %}
{% unless classic %}
 
{% comment %}Customer pricing attribution and default{% endcomment %}
{% assign var_id = cproduct.first_available_variant.id %}
 
{% if customer %}
{% for tag in customer.tags %}
  {% if tag contains 'PRICING|' %}
	{% assign pricing = tag | remove:'PRICING|' %}
	{% for variant in cproduct.variants %}
		{% if variant.title == pricing %}
		{% assign var_id = variant.id %}
		{% else %}
		{% continue %}
		{% endif %}
    {% endfor %}
  {% else %}
  {% continue %}
  {% endif %}
{% endfor %}
{% endif %}
 
 
 
<div class="form-inline form-cart" data-type="{{ cproduct.type | handleize }}" data-activation="disabled">
  <div class="form-group">
    <input type="text" name="quantity" class="form-control qty cart-qty" 
           placeholder="0" data-quantity="0"
           data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
           data-vendor="{{ cproduct.vendor }}"
    > 
  </div>
 
    <button type="submit" class="btn solid minus cart-minus" data-quantity="0"
            data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
            data-vendor="{{ cproduct.vendor }}"  disabled>
 
        - 
    </button>
    <button type="submit" class="btn solid plus cart-plus" data-quantity="1"
           data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
           data-vendor="{{ cproduct.vendor }}"   disabled>
      <a href="" data-toggle="modal" data-target=".modal-lg">
        + </a>
    </button>  
</div>
 
<!-- Large modal -->
          <div class="modal fade modal-lg .modal-backdrop" tabindex="-1" role="dialog" aria-labelledby="delivery-banner">
            <div class="modal-dialog modal-lg" role="document">
              <div class="modal-content">
                <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
                </div>
 
 
                <div data-section-id="{{ section.id }}" data-section-type="form">
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-1 hidden-sm hidden-xs">
          {% if customer %}
          <div class="customer-info">
            <h4 class="text-uppercase">{{ customer.name }}</h4>
            <h5 class="text-uppercase">{{ customer.default_address.company }}</h5>
          </div>
          {% else %}
           {% unless section.settings.ico_left == blank %}
            <img src="{{ section.settings.ico_left | img_url: 'x42' }}" alt="{{ section.settings.ico_left.alt }}" class="img-responsive">
            {% endunless %}
          {% endif %}
      </div>
      <div class="col-md-10">
        <form id="delivery_form">
          <div class="col-md-3 col-spec">
            <div class="form-group day">
              {% assign now_limit ='now' | date: '%Y-%m-%d' %}
              {% unless section.settings.ico_cal == blank %}
              <img src="{{ section.settings.ico_cal | img_url: 'x16' }}" alt="{{ section.settings.ico_cal.alt }}" class="icon">
              {% else %}
              <img src="{{ 'icon-delivery-day.png'  | asset_img_url: 'x16' }}" class="icon">
              {% endunless %}
              <label for="delivery_day" class="text-uppercase">{{ 'layout.delivery_form.day_label' | t }}</label>
              <input type="text" class="form-control text-uppercase" min="{{- now_limit -}}" id="datepicker" placeholder="{{ 'layout.delivery_form.day_placeholder' | t }}" required autocomplete="off">
            </div>
          </div>
          <div class="col-md-3 col-spec">
            <div class="form-group hour">
              {% unless section.settings.ico_time == blank %}
              <img src="{{ section.settings.ico_time | img_url: 'x16' }}" alt="{{ section.settings.ico_time.alt }}" class="icon">
              {% else %}
              <img src="{{ 'icon-delivery-hour.png'  | asset_img_url: 'x16' }}" class="icon">
              {% endunless %}
              <label for="delivery_hour" class="text-uppercase">{{ 'layout.delivery_form.hour_label' | t }}</label>
              <input type="text" class="form-control text-uppercase" id="delivery_hour" min="06:00" max="23:59" placeholder="{{ 'layout.delivery_form.hour_placeholder' | t }}" pattern="[0-9]{2}:[0-9]{2}" required autocomplete="off">
              <div id="timerContainer"></div>
            </div>
          </div>
          <div class="col-md-3 col-spec">
            <div class="form-group place">
              {% unless section.settings.ico_place == blank %}
              <img src="{{ section.settings.ico_place | img_url: 'x16' }}" alt="{{ section.settings.ico_place.alt }}" class="icon">
              {% else %}
              <img src="{{ 'icon-delivery-place.png'  | asset_img_url: 'x16' }}" class="icon">
              {% endunless %}
              <label for="delivery_place" class="text-uppercase">{{ 'layout.delivery_form.place_label' | t }}</label>
 
              {% if customer and customer.addresses_count > 0 %}
              <select class="form-control text-uppercase" id="delivery_place_customer">
                {% for address in customer.addresses %}
                <option{% if address == customer.default_address %} selected{% endif %}
                        value="{{ address.address1 }} - {{ address.zip }} {{ address.city }}"
                        data-phone="{{ address.phone }}" data-company="{{ address.company }}"
                        data-address1="{{ address.address1 }}" data-address2="{{ address.address2 }}"
                        data-zip="{{ address.zip }}" data-city="{{ address.city }}" data-country="{{ address.country }}">
                  {{ address.address1 }} - {{ address.zip }} {{ address.city }}
                </option>
                {% endfor %}
                <option class="create-address" value="create">
                  <em>{{ 'layout.delivery_form.create_address' | t }}</em>
                </option>
              </select>
              {% endif %}
              <input type="text" class="form-control text-uppercase{% if customer and customer.addresses_count > 0 %} hide-content{% endif %}" id="delivery_place" placeholder="{{ 'layout.delivery_form.place_placeholder' | t }}"{% unless customer and customer.addresses_count > 0 %} required{% endunless %} autocomplete="off">
 
 
              <div id="address">
                <input id="street_number" disabled="true" type="hidden">
                <input id="route" disabled="true" type="hidden">
                <input id="locality" disabled="true" type="hidden">
                <input id="postal_code" disabled="true" type="hidden">
              </div>
 
            </div>
          </div>
          <div class="col-md-3 col-spec last">
            <div class="form-group">
            <button type="submit" class="btn pull-right">{{ 'layout.delivery_form.submit' | t }}</button>
            </div>
          </div>
        </form>
      </div>
      {% comment %}Count items in cart excepting delivery and service items{% endcomment %}
      {% assign cart_item_count = 0 %}
      {% for item in cart.items %}
      {% unless item.product.type == 'Livraison' or item.product.type == 'Service' %}
      {% assign cart_item_count = cart_item_count | plus: item.quantity %}
      {% else %}
      {% continue %}
      {% endunless %}
      {% endfor %}
      <div class="col-md-1 hidden-sm hidden-xs">
        <div class="cart-link-container pull-right">
          <a href="/cart" class="cart-link" id="globalCartButton">
            <img src="{{ 'icon-cart-white.png'  | asset_img_url: 'x28' }}" class="img-responsive pull-right">
            <span class="cart-counter">{{ cart_item_count }}</span>
          </a>
        </div>
      </div>
    </div>
  </div>
</div>
 
 
 
              </div>
            </div>
          </div> 
 
{% comment %}CLASSIC PRODUCT CASE{% endcomment %}
{% else %}
 
  {% if product.available %}
  <div class="form-inline form-cart classic-cart-form" data-type="{{ cproduct.type | handleize }}" data-activation="disabled">
    <div class="form-group">
    <input type="text" name="quantity" class="form-control qty cart-qty" 
           placeholder="0" data-quantity="0"
           data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
           data-vendor="{{ cproduct.vendor }}"
    > 
  </div>
    <button type="submit" class="btn solid minus cart-minus" data-quantity="0"
            data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
            data-vendor="{{ cproduct.vendor }}">
      - 
    </button>
    <button type="submit" class="btn solid plus cart-plus" data-quantity="1"
           data-variant="{{ var_id }}" data-product="{{ cproduct.handle }}" data-type="{{ cproduct.type | handleize }}" data-clear-type="{{ cproduct.type }}"
           data-vendor="{{ cproduct.vendor }}">
      +
    </button>
  </div>
  {% else %}
  <div class="text-uppercase price"><small>{{ 'collection.sold_out' | t }}</small></div>
  {% endif %}
 
{% endunless %}
 
<!-- FORM FILLING MANAGEMENT -->
 
{% comment %}DATE{% endcomment %}
{{ 'datepicker_fr.js' | asset_url | script_tag }}
<script>
 
     /** Days to be disabled as an array */
    var disableddates = [];
    {% unless section.blocks.size < 1 %}
    {% for block in section.blocks %}
    disableddates.push({{ block.settings.date | json }});
    {% endfor %}
    {% endunless %}
 
    function DisableSpecificDates(date) {
          /* Based upon Ankit function */
 
     var m = date.getMonth();
     var d = date.getDate();
     var y = date.getFullYear();
 
     // First convert the date in to the mm-dd-yyyy format
     // Take note that we will increment the month count by 1
     var currentdate = d + '/' + (m + 1) + '/' + y ;
 
 
 
     // We will now check if the date belongs to disableddates array
     for (var i = 0; i < disableddates.length; i++) {
 
     // Now check if the current date is in disabled dates array.
     if ($.inArray(currentdate, disableddates) != -1 ) {
     return [false];
     }
     }
 
     // In case the date is not present in disabled array, we will now check if it is a weekend.
     // We will use the noWeekends function
     var weekenddate = $.datepicker.noWeekends(date);
     return weekenddate;
 
    }
 
 
    // Calendar Manager //
    $( "#datepicker" ).datepicker({
      minDate: 1,
      showAnim: 'drop',
      beforeShowDay: DisableSpecificDates
    });
 
</script>
 
{% comment %}HOUR{% endcomment %}
{% comment %}Hours form managed in dedicated global_horaires section{% endcomment %}
 
{% comment %}PLACE{% endcomment %}
{% include 'form_autocomplete' %}
 
<!-- PARSING AND AUTOFILLING -->
 
<script>
    /*--- FUNCTIONS ---*/
    function formChecker(confirmMessage) {
      var deliveryDate = $('#datepicker').val(),
          deliveryHour = $('#delivery_hour').val(),
          deliveryAddress1 = $('#address #street_number').val() + ' ' + $('#address #route').val(),
          deliveryZipCode = $('#postal_code').val(),
          deliveryCity = $('#address #locality').val();
 
          {% if customer and customer.addresses_count > 0 %}
          var deliveryPlace = $('#delivery_place_customer').val();
 
          /* Check if address entered before connection exists, if not add it and select it */
          if (!deliveryPlace) {
            var route = $('#address #route').val().trim(),
                zip = $('#postal_code').val(),
                city = $('#address #locality').val(),
                newAddress = route + ' - ' + zip + ' ' + city;
            $('#delivery_place_customer').append($('<option>', {value: newAddress,text: newAddress}));
            $('#delivery_place_customer option[value="' + newAddress + '"]').prop('selected', true).attr('data-address1', route).attr('data-zip', zip).attr('data-city', city);
                var deliveryPlace = $('#delivery_place_customer').val();
          }
 
          {% else %}
          var deliveryPlace = $('#delivery_place').val();
          {% endif %}
      //alert(deliveryAddress1 + deliveryZipCode + deliveryCity);
 
      if (deliveryDate && deliveryHour && deliveryPlace && deliveryZipCode) {
 
        $('body').attr('data-delivery', 'completed');
        // hide button
        $('#delivery_form .btn[type="submit"]').css('transition', 'initial');
        $('#delivery_form .btn[type="submit"]').fadeOut(2000);
        deliveryCart(deliveryPlace, deliveryDate, deliveryHour);
        cartAttr(deliveryDate,deliveryHour,deliveryPlace);
        if(confirmMessage) {
          var message = '{{ 'layout.delivery_form.confirmation' | t }}';
          feedback(message);
        }
        Cookies.set('date', deliveryDate , { expires: 0.05 });
        Cookies.set('hour', deliveryHour , { expires: 0.05 });
        Cookies.set('place', deliveryPlace , { expires: 360 });
        Cookies.set('address1', deliveryAddress1 , { expires: 360 });
        Cookies.set('zip', deliveryZipCode , { expires: 360 });
        Cookies.set('city', deliveryCity , { expires: 360 });
      } else if (deliveryDate && deliveryHour && deliveryPlace) {
 
        $('body').attr('data-delivery', 'uncomplete');
        var zipEx = deliveryPlace.match(/\b\d{5}\b/g);
        if (zipEx) {
          $('#postal_code').val(zipEx);
          $('body').attr('data-delivery', 'completed');
          deliveryCart(deliveryPlace, deliveryDate, deliveryHour);
          if(confirmMessage) {
            var message = '{{ 'layout.delivery_form.confirmation' | t }}';
            feedback(message);
          }
        } else {
          var message = '{{ 'layout.delivery_form.unvalid_zip' | t }}';
          feedback(message);
          CartJS.clear();
          if(!deliveryZipCode){Cookies.remove('zip');};
        }
        Cookies.set('date', deliveryDate , { expires: 0.05 });
        Cookies.set('hour', deliveryHour , { expires: 0.05 });
        Cookies.set('place', deliveryPlace , { expires: 360 });
      } else {
 
        $('body').attr('data-delivery', 'uncomplete');
          if(confirmMessage) {
            var message = '{{ 'layout.delivery_form.unvalid_form' | t }}';
            feedback(message);
          }
          CartJS.clear();
          if(!deliveryDate){Cookies.remove('date');};
          if(!deliveryHour){Cookies.remove('hour');};
          if(!deliveryPlace){Cookies.remove('place');};
          if(!deliveryZipCode){Cookies.remove('zip');};
      }
    }
 
    function retrieveInformations() {
      var deliveryDate = Cookies.get('date'),
          deliveryHour = Cookies.get('hour'),
          deliveryPlace = Cookies.get('place'),
          deliveryAddress1 = Cookies.get('address1'),
          deliveryZipCode = Cookies.get('zip'),
          deliveryCity = Cookies.get('city');
      if (deliveryDate !== undefined) {$('#datepicker').val();$('#datepicker').val(deliveryDate);}
      if (deliveryHour !== undefined) {$('#delivery_hour').val();$('#delivery_hour').val(deliveryHour);}
      if (deliveryPlace !== undefined) {$('#delivery_place, #delivery_place_customer').val();$('#delivery_place, #delivery_place_customer').val(deliveryPlace);}
      if (deliveryZipCode !== undefined) {$('#postal_code').val();$('#postal_code').val(deliveryZipCode);}
      if (deliveryAddress1 !== undefined) {$('#address #route').val();$('#address #route').val(deliveryAddress1);}
      if (deliveryCity !== undefined) {$('#address #locality').val();$('#address #locality').val(deliveryCity);}
    }
 
 
    function selectListener(newZip) {
      $('#postal_code').val(newZip);
      Cookies.set('zip', newZip , { expires: 360 });
      formChecker();
      CartJS.clear();
    }
 
    function deliveryCart(deliveryPlace, deliveryDate, deliveryHour) {
        $('#cartAddress').html(deliveryPlace);
        $('#cartDate').html(deliveryDate + ' {{ 'cart.at' | t }} ' + deliveryHour);
        //alert(deliveryPlace + deliveryDate + deliveryHour);
    };
 
 
    function infoReset() {
      Cookies.remove('date'),
      Cookies.remove('hour'),
      Cookies.remove('place'),
      Cookies.remove('zip');
    }
 
    function checkTemplate() {
      if(!$('body').hasClass('template-collection') && !$('body').hasClass('template-index ') ) {
        window.location.href = '/#collections_links';
      }
    }
 
    /* Adding hour & date as cart attributes to use them in order attributes when validate cart */
    function cartAttr(deliveryDate,deliveryHour,deliveryPlace) {
      CartJS.setAttribute('Date', deliveryDate);
      CartJS.setAttribute('Heure',deliveryHour);
      CartJS.setAttribute('Lieu',deliveryPlace);
      console.log(CartJS.cart);
    }
 
  /*--- EXE ---*/
    $('#delivery_form').submit(function( event ) {
      event.preventDefault();
      CartJS.clear();
      var confirmMessage = true;
      formChecker(confirmMessage);
      checkTemplate();
      // HIDE VALIDATE BUTTON
      $('#delivery_form .btn[type="submit"]').css('transition', 'initial');
      $('#delivery_form .btn[type="submit"]').fadeOut(2000);
    })
 
      // show VALIDATE BUTTON
    $('input#datepicker, input#delivery_hour, input#delivery_place').click(function() {
      $('#delivery_form .btn[type="submit"]').fadeIn(2000, function() {
        $(this).css('transition', 'all .3s ease .10s');
      });
    })
 
 
    $(document).ready(function() {
      retrieveInformations();
      var confirmMessage = false;
      formChecker(confirmMessage);
    });
 
 
  /* Specific functions for customers case && non customer cases  */
  {% if customer and customer.addresses_count > 0 %}
  $('#delivery_place_customer').change(function() {
    var newZip = $(this).find('option:selected').attr('data-zip');
      if ($(this).val() === 'create') {
        /* Managing redirect when select Create an address */
        window.location.href = '/account/addresses/#addresses';
      } else {
        /* Or check for Zip */
        selectListener(newZip);
      }
  });
  {% else %}
  /*$('#delivery_place').change(function() {
    alert('changed');
    var newZip = $('#postal_code').val();
    selectListener(newZip);
  });*/
  {% endif %}
</script>