<div class="carousel">
  <button class="tile">
    <div class="sr-only">tile 1 of 5,</div>
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3609497/galina-n-300x300.jpg" class="product-image" alt="Succulent in planter">
    <div class="overlay">
      <div class="quick-view-button">Quick view</div>
    </div>
  </button>

  <button class="tile">
    <div class="sr-only">tile 2 of 5,</div>
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3609497/curology-300x300.jpg" class="product-image" alt="Lotion bottle with text Curology on it">
    <div class="overlay">
      <div class="quick-view-button">Quick view</div>
    </div>
  </button>

  <button class="tile">
    <div class="sr-only">tile 3 of 5,</div>
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3609497/imani-clovis-300x300.jpg" class="product-image" alt="Black running shoe falling downward">
    <div class="overlay">
      <div class="quick-view-button">Quick view</div>
    </div>
  </button>

  <button class="tile">
    <div class="sr-only">tile 4 of 5,</div>
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3609497/rachit-tank-300x300.jpg" class="product-image" alt="Wristwatch laid on table">
    <div class="overlay">
      <div class="quick-view-button">Quick view</div>
    </div>
  </button>

  <button class="tile">
    <div class="sr-only">tile 5 of 5,</div>
    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/3609497/deanna-alys-300x300.jpg" class="product-image" alt="Lotion bottle with succulent and water bottle in background">
    <div class="overlay">
      <div class="quick-view-button">Quick view</div>
    </div>
  </button>
</div>

<a href="https://allyant.com" class="credits" target="_blank">
  Built by<img src="https://assets.codepen.io/3609497/allyant-logo.svg" alt="Allyant">
</a>

<!-- Quick view dialog - reused for each tile -->
<div class="dialog is-hidden" role="dialog" aria-modal="true">
  <div class="overlay">
    <button class="close-button first-focusable-element">
      <span class="fa fa-times" aria-hidden="true"></span>
      <span class="sr-only">Close</span>
    </button>
    
    <h2 class="title">Quick view</h2>
    <p>This is a fake modal. Press Escape to close, or activate any of the buttons.</p>
    
    <button class="ok-button last-focusable-element">OK</button>
  </div>
</div>

/**
  Setup for code demo only
*/
:root {
  --tile-width: 200px;
  --tile-margin: 10px;
  --carousel-height: 175px;
}

body {
  margin: 10px;
}


/**
  Container
*/
.carousel {
  position: relative;
  width: calc(100% - 100px);
  max-width: 700px;
  margin-left: 50px;
}


/**
  Controls (previous/next buttons)
*/
.is-control {
  background: 0;
  border: 0;
  padding: 0 10px;
  z-index: 1;
  cursor: pointer;
  
  font-size: 40px;
  color: rgba(0,0,0,.6);
  
  transition: all .2s linear;
}

  .is-control:hover {
    color: rgba(0,0,0,1);
  }

  .is-control:focus {
    outline: none;
    background-color: rgba(0,0,0,.8);
    color: rgba(255,255,255,1);
    border-radius: 5px;
  }

.previous-button {
  position: absolute;
  left: -50px;
  top: 60px;
}

.next-button {
  position: absolute;
  right: -50px;
  top: 60px;
}


/**
  Single tile
*/
.tile {
  height: var(--carousel-height);
  position: relative;
  
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

  .tile:focus {
    outline: 0;
  }

  .slick-slide:not(:last-of-type) {
    margin-right: var(--tile-margin);
  }

  .tile .product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .tile .overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    display: flex;
    justify-content: center;
    align-items: center;

    background-color: rgba(0,0,0,.6);
    
    transition: opacity .1s linear;
    opacity: 0;
  }

    .tile:focus .overlay,
    .tile:hover .overlay {
      opacity: 1;
    }

    .tile .overlay .quick-view-button {
      padding: 10px 15px;

      background: rgba(0,0,0,.7);
      border: 3px solid white;
      box-shadow: 0 0 15px 0 rgba(0,0,0,.6);

      color: white;
      font-size: 14px;
      text-transform: uppercase;
      font-weight: bold;
    }


/**
  Quick view dialog
*/
.dialog {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  
  background-color: rgba(0,0,0,.6);
  z-index: 100;
  
  display: flex;
  justify-content: center;
  align-items: center;
}

  .dialog.is-hidden {
    display: none;
  }

  .dialog .overlay {
    background-color: white;
    border-radius: 10px;

    position: relative;

    width: 80%;
    max-width: 400px;
    padding: 20px;
  }

    .dialog .overlay .close-button {
      position: absolute;
      top: 15px;
      right: 10px;

      background: none;
      border: 0;
      font-size: 18px;
      cursor: pointer;
    }

    .dialog .overlay .title {
      margin: 0;
    }

    .dialog .overlay .ok-button {
      padding: 10px 15px;
      background: royalblue;
      border: 0;
      border-radius: 5px;
      color: white;
      cursor: pointer;
    }

      .dialog .overlay .ok-button:focus {
        outline-offset: 5px;
      }

/** Credits at bottom */
.credits {
  margin-left: 40px;
  padding: 10px;
  font-size: 14px;
  color: black;
  text-decoration: none;
  opacity: .7;
}

  .credits img {
    height: 30px;
    margin-left: 5px;
    margin-top: -2px;
    vertical-align: middle;
  }

  .credits:hover,
  .credits:focus {
    opacity: 1;
  }

var tiles = [];
var dialog, dialogOverlay, dialogCloseButton, dialogOkButton;
var triggeringElement;

window.addEventListener('DOMContentLoaded', function(e) {
  dialog = document.querySelector('.dialog');
  dialogOverlay = dialog.querySelector('.overlay');
  dialogCloseButton = dialogOverlay.querySelector('.close-button');
  dialogOkButton = dialogOverlay.querySelector('.ok-button');

  /**
    Once Slick has initialized, retrieve the relevant DOM elements and setup quick view functionality 
  */
  $('.carousel').on('init', function(e, slick) {
    tiles = document.querySelectorAll('.carousel .tile');
  
    // Activating any tile should launch the quick view modal
    tiles.forEach(function(tile) {
      tile.addEventListener('click', openDialog);
    });
  });
  
  /**
    Initialize Slick Slider with recommended configuration options
  */
  $('.carousel').slick({
    slidesToShow: 3,
    prevArrow: '<button class="previous-button is-control">' +
               '  <span class="fas fa-angle-left" aria-hidden="true"></span>' +
               '  <span class="sr-only">Previous slide</span>' +
               '</button>',
    nextArrow: '<button class="next-button is-control">' +
               '  <span class="fas fa-angle-right" aria-hidden="true"></span>' +
               '  <span class="sr-only">Next slide</span>' +
               '</button>',
    responsive: [
      {
        breakpoint: 575,
        settings: {
          slidesToShow: 2
        }
      },
      {
        breakpoint: 375,
        settings: {
          slidesToShow: 1
        }
      }
    ]
  });
  
  // Close the dialog when any of its interactive elements are activated
  dialogCloseButton.addEventListener('click', closeDialog);
  dialogOkButton.addEventListener('click', closeDialog);
  
  // Clicking anywhere outside the dialog content should close the dialog
  dialog.addEventListener('click', handleDialogClicks);
  dialog.addEventListener('keydown', handleDialogKeypresses);
});


/**
  NOTE: Modal dialog implementation for code demo purposes only!
*/
function openDialog(e) {
  e.preventDefault();
  triggeringElement = e.target;
  dialog.classList.remove('is-hidden');
  dialogCloseButton.focus();
}

function closeDialog() {
  triggeringElement.focus();
  dialog.classList.add('is-hidden');
}

function handleDialogClicks(e) {
  if(!dialogOverlay.contains(e.target)) {
    closeDialog();
  }
}

function handleDialogKeypresses(e) {
  switch(e.key) {
    case 'Escape':
      closeDialog();
      break;

    case 'Tab':
      if(e.shiftKey && document.activeElement === dialogCloseButton) {
        e.preventDefault();
        dialogOkButton.focus();
      } else if(!e.shiftKey && document.activeElement === dialogOkButton) {
        e.preventDefault();
        dialogCloseButton.focus();
      }

      break;
  }
}