Ссылки не кликабельные в слайдере

 'use strict';
    var multiItemSlider = (function () {

      function _isElementVisible(element) {
        var rect = element.getBoundingClientRect(),
          vWidth = window.innerWidth || doc.documentElement.clientWidth,
          vHeight = window.innerHeight || doc.documentElement.clientHeight,
          elemFromPoint = function (x, y) { return document.elementFromPoint(x, y) };
        if (rect.right < 0 || rect.bottom < 0
          || rect.left > vWidth || rect.top > vHeight)
          return false;
        return (
          element.contains(elemFromPoint(rect.left, rect.top))
          || element.contains(elemFromPoint(rect.right, rect.top))
          || element.contains(elemFromPoint(rect.right, rect.bottom))
          || element.contains(elemFromPoint(rect.left, rect.bottom))
        );
      }

      return function (selector, config) {
        var
          _mainElement = document.querySelector(selector),
          _sliderWrapper = _mainElement.querySelector('.slider__wrapper'),
          _sliderItems = _mainElement.querySelectorAll('.slider__item'),
          _sliderControls = _mainElement.querySelectorAll('.slider__control'),
          _sliderControlLeft = _mainElement.querySelector('.slider__control_left'),
          _sliderControlRight = _mainElement.querySelector('.slider__control_right'),
          _wrapperWidth = parseFloat(getComputedStyle(_sliderWrapper).width),
          _itemWidth = parseFloat(getComputedStyle(_sliderItems[0]).width),
          _html = _mainElement.innerHTML,
          _positionLeftItem = 0,
          _transform = 0,
          _step = _itemWidth / _wrapperWidth * 100,
          _items = [],
          _interval = 0,
          _states = [
            { active: false, minWidth: 0, count: 1 },
            { active: false, minWidth: 576, count: 2 },
            { active: false, minWidth: 992, count: 3 },
            { active: false, minWidth: 1200, count: 4 },
          ],
          _config = {
            isCycling: false,
            direction: 'right',
            interval: 5000,
            pause: true
          };

        for (var key in config) {
          if (key in _config) {
            _config[key] = config[key];
          }
        }

        _sliderItems.forEach(function (item, index) {
          _items.push({ item: item, position: index, transform: 0 });
        });

        var _setActive = function () {
          var _index = 0;
          var width = parseFloat(document.body.clientWidth);
          _states.forEach(function (item, index, arr) {
            _states[index].active = false;
            if (width >= _states[index].minWidth)
              _index = index;
          });
          _states[_index].active = true;
        }

        var _getActive = function () {
          var _index;
          _states.forEach(function (item, index, arr) {
            if (_states[index].active) {
              _index = index;
            }
          });
          return _index;
        }

        var position = {
          getItemMin: function () {
            var indexItem = 0;
            _items.forEach(function (item, index) {
              if (item.position < _items[indexItem].position) {
                indexItem = index;
              }
            });
            return indexItem;
          },
          getItemMax: function () {
            var indexItem = 0;
            _items.forEach(function (item, index) {
              if (item.position > _items[indexItem].position) {
                indexItem = index;
              }
            });
            return indexItem;
          },
          getMin: function () {
            return _items[position.getItemMin()].position;
          },
          getMax: function () {
            return _items[position.getItemMax()].position;
          }
        }

        var _transformItem = function (direction) {
          var nextItem;
          if (!_isElementVisible(_mainElement)) {
            return;
          }
          if (direction === 'right') {
            _positionLeftItem++;
            if ((_positionLeftItem + _wrapperWidth / _itemWidth - 1) > position.getMax()) {
              nextItem = position.getItemMin();
              _items[nextItem].position = position.getMax() + 1;
              _items[nextItem].transform += _items.length * 100;
              _items[nextItem].item.style.transform = 'translateX(' + _items[nextItem].transform + '%)';
            }
            _transform -= _step;
          }
          if (direction === 'left') {
            _positionLeftItem--;
            if (_positionLeftItem < position.getMin()) {
              nextItem = position.getItemMax();
              _items[nextItem].position = position.getMin() - 1;
              _items[nextItem].transform -= _items.length * 100;
              _items[nextItem].item.style.transform = 'translateX(' + _items[nextItem].transform + '%)';
            }
            _transform += _step;
          }
          _sliderWrapper.style.transform = 'translateX(' + _transform + '%)';
        }

        var _cycle = function (direction) {
          if (!_config.isCycling) {
            return;
          }
          _interval = setInterval(function () {
            _transformItem(direction);
          }, _config.interval);
        }

        var _controlClick = function (e) {
          e.preventDefault();
          if (e.target.classList.contains('slider__control')) {
            var direction = e.target.classList.contains('slider__control_right') ? 'right' : 'left';
            _transformItem(direction);
            clearInterval(_interval);
            _cycle(_config.direction);
          }
        };

        var _handleVisibilityChange = function () {
          if (document.visibilityState === "hidden") {
            clearInterval(_interval);
          } else {
            clearInterval(_interval);
            _cycle(_config.direction);
          }
        }

        var _refresh = function () {
          clearInterval(_interval);
          _mainElement.innerHTML = _html;
          _sliderWrapper = _mainElement.querySelector('.slider__wrapper');
          _sliderItems = _mainElement.querySelectorAll('.slider__item');
          _sliderControls = _mainElement.querySelectorAll('.slider__control');
          _sliderControlLeft = _mainElement.querySelector('.slider__control_left');
          _sliderControlRight = _mainElement.querySelector('.slider__control_right');
          _wrapperWidth = parseFloat(getComputedStyle(_sliderWrapper).width);
          _itemWidth = parseFloat(getComputedStyle(_sliderItems[0]).width);
          _positionLeftItem = 0;
          _transform = 0;
          _step = _itemWidth / _wrapperWidth * 100;
          _items = [];
          _sliderItems.forEach(function (item, index) {
            _items.push({ item: item, position: index, transform: 0 });
          });
        }

        var _setUpListeners = function () {
          _mainElement.addEventListener('click', _controlClick);
          if (_config.pause && _config.isCycling) {
            _mainElement.addEventListener('mouseenter', function () {
              clearInterval(_interval);
            });
            _mainElement.addEventListener('mouseleave', function () {
              clearInterval(_interval);
              _cycle(_config.direction);
            });
          }
          document.addEventListener('visibilitychange', _handleVisibilityChange, false);
          window.addEventListener('resize', function () {
            var
              _index = 0,
              width = parseFloat(document.body.clientWidth);
            _states.forEach(function (item, index, arr) {
              if (width >= _states[index].minWidth)
                _index = index;
            });
            if (_index !== _getActive()) {
              _setActive();
              _refresh();
            }
          });
        }

        // инициализация
        _setUpListeners();
        if (document.visibilityState === "visible") {
          _cycle(_config.direction);
        }
        _setActive();

        return {
          right: function () {
            _transformItem('right');
          },
          left: function () {
            _transformItem('left');
          },
          stop: function () {
            _config.isCycling = false;
            clearInterval(_interval);
          },
          cycle: function () {
            _config.isCycling = true;
            clearInterval(_interval);
            _cycle();
          }
        }

      }
    }());

    var slider = multiItemSlider('.slider', {
      isCycling: true
    })

  <style>

    /*!

     * chiefSlider (https://itchief.ru/lessons/php/feedback-form-for-website)

     * Copyright 2018 Alexander Maltsev

     * Licensed under MIT (https://github.com/itchief/feedback-form/blob/master/LICENSE)

     */

    *,

    *::before,

    *::after {

      box-sizing: border-box;

    }

    body {

      margin: 0;

      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";

      color: #fff;

    }

    .slider {

      position: relative;

      overflow: hidden;

      max-width: 1600px;

      margin: 0 auto;

      padding-left: 40px;

      padding-right: 40px;

    }

    .slider__wrapper {

      display: flex;

      transition: transform 0.6s ease;

    }

    .slider__item {

      flex: 0 0 100%;

      max-width: 100%;

      padding-left: 10px;

      padding-right: 10px;

    }

    @media (min-width: 576px) {

      .slider__item {

        flex: 0 0 50%;

        max-width: 50%;

      }

    }

    @media (min-width: 992px) {

      .slider__item {

        flex: 0 0 33.333333%;

        max-width: 33.333333%;

      }

    }

    @media (min-width: 1200px) {

      .slider__item {

        flex: 0 0 25%;

        max-width: 25%;

      }

    }

    .slider__control {

      position: absolute;

      top: 0;

      display: flex;

      align-items: center;

      justify-content: center;

      width: 50px;

      color: #fff;

      text-align: center;

      bottom: 0;

      background: #fff;

    }

    .slider__control:hover,

    .slider__control:focus {

      color: #fff;

      text-decoration: none;

      outline: 0;

    }

    .slider__control_left {

      left: 0;

    }

    .slider__control_right {

      right: 0;

    }

    .slider__control::before {

      content: '';

      display: inline-block;

      width: 20px;

      height: 20px;

      background: transparent no-repeat center center;

      background-size: 100% 100%;

    }

    .slider__control_left::before {

      background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23424242' viewBox='0 0 8 8'%3E%3Cpath d='M5.25 0l-4 4 4 4 1.5-1.5-2.5-2.5 2.5-2.5-1.5-1.5z'/%3E%3C/svg%3E");

    }

    .slider__control_right::before {

      background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23424242' viewBox='0 0 8 8'%3E%3Cpath d='M2.75 0l-1.5 1.5 2.5 2.5-2.5 2.5 1.5 1.5 4-4-4-4z'/%3E%3C/svg%3E");

    }

    .slider__content_header {

      position: relative;

    }

    .slider__content_img {

      display: block;

      height: auto;

      max-width: 100%;

    }

    .slider__content_section {

      position: absolute;

      bottom: 0;

      left: 0;

      background: #009688;

      color: #fff;

      padding: 4px 8px;

    }

    .slider__content_title {

      background: #f5f5f5;

      color: #424242;

      white-space: normal;

      font-weight: 700;

      font-size: 20px;

      line-height: 1.3;

      padding: 10px 15px;

      margin: 0;

      height: 52px;

    }

    .slider__content_footer {

      background: #f5f5f5;

      display: flex;

      padding: 20px 15px;

      color: #616161;

    }

    .slider__content_avatar {

      flex: 0 0 40px;

      max-width: 40px;

    }

    .slider__content_photo {

      display: block;

      height: auto;

      max-width: 100%;

      border-radius: 50%;

    }

    .slider__content_author {

      margin-left: 8px;

      line-height: 40px;

    }

    .slider__content_icon {

      height: 18px;

      margin-top: 12px;

      margin-left: auto;

    }

    .slider__content_views {

      margin-left: 4px;

      line-height: 40px;

    }

  </style>