$(document).ready(function(){
  var slider = $('#slider').bxSlider({
    auto: true,
             controls: true,
             slideMargin: 70,
             infiniteLoop: true,
             mode: 'horizontal',
             autoDirection: 'next',
             responsive: true,
             preloadImages: 'all',
             autoDelay: 0,
             randomStart: false,
             pager: false,
             moveSlideQty: 1,
             adaptiveHeight:true,
             useCSS: false,
             speed: 750,
             slideSelector: 'div.item',
             minSlides: 3,
             maxSlides: 3,
             moveSlides: 1,
             slideWidth: 1000,
             nextSelector: '#slider-next',
             prevSelector: '#slider-prev',
             nextText: '<i class="fa fa-arrow-circle-right fa-3x"></i>',
             prevText: '<i class="fa fa-arrow-circle-left fa-3x"></i>',
             onSlideBefore: function(currentSlideNumber, totalSlideQty, currentSlideHtmlObject) {
              var progressLength = (currentSlideHtmlObject +1) * 20 + '%';
              $('.progress span').css('max-width','calc(15px + ' + progressLength + ')')}
  });
});