CodePen Embed - Accordian slider

<div class="accordion-slider">
  <div class="accordion-slider-inner">
    <ul>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Studio Lighting</h2>
            <p>Lighting<br> Light Modifiers<br> Light Controls<br> Backdrops
            </p>
          </a>
        </div>
      </li>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Filmmaking Gear</h2>
            <p>LED Lighting<br> Scrim Jim Cine<br> Chroma-Key
            </p>
          </a>
        </div>
      </li>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Speedlight Modifiers</h2>
            <p>Apollo<br> LunaGrip
              <br> Rapid Box</p>
          </a>
        </div>
      </li>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Travel Photography</h2>
            <p>Rapid Box<br> Reflectors
              <br> Cases
            </p>
          </a>
        </div>
      </li>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Newborn Photography</h2>
            <p>Props<br> Backdrops
              <br> Lighting
            </p>
          </a>
        </div>
      </li>
      <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Photo Enthusiast</h2>
            <p>CFL Lighting<br> Reflectors
              <br> Backdrops
            </p>
          </a>
        </div>
      </li>
	  <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Photo Enthusiast</h2>
            <p>CFL Lighting<br> Reflectors
              <br> Backdrops
            </p>
          </a>
        </div>
      </li>
	  <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Photo Enthusiast</h2>
            <p>CFL Lighting<br> Reflectors
              <br> Backdrops
            </p>
          </a>
        </div>
      </li>
	  <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Photo Enthusiast</h2>
            <p>CFL Lighting<br> Reflectors
              <br> Backdrops
            </p>
          </a>
        </div>
      </li>
	  <li>
        <div>
          <a href="#" class="sliderLink">
            <h2>Photo Enthusiast</h2>
            <p>CFL Lighting<br> Reflectors
              <br> Backdrops
            </p>
          </a>
        </div>
      </li>
    </ul>
  </div>
</div>

body {
  background-color: black;
  margin: 0;
  padding: 0;
}

*, *:after, *:before{box-sizing: border-box; 
  -webkit-text-size-adjust: none;
    -webkit-font-smoothing: subpixel-antialiased;
    -webkit-font-smoothing: antialiased;
}

.accordion-slider {
  width: 100%;
  height: 658px;
  overflow: hidden;
  margin: 0px auto;
  max-width: 100%;
}
.accordion-slider-inner{
  margin-left: -90px;
  margin-right: -90px;
}
.accordion-slider ul {
  width: 100%;
  display: table;
  table-layout: fixed;
  margin: 0;
  padding: 0;
}

.accordion-slider ul li {
  display: table-cell;
  vertical-align: bottom;
  position: relative;
  width: 16.666%;
  height: 658px;
  transition: all 500ms ease-in-out;

  transform: translate3d(0, 0, 0) skew(-15deg, 0deg);
  overflow: hidden;
}
.accordion-slider ul li::before{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  background-color: rgba(0,0,0,0.5);
  z-index: 1;
}

.accordion-slider ul li div {
  display: block;
  overflow: hidden;
  width: 100%;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;

  transform: translate3d(0, 0, 0) skew(15deg, 0deg);

  position: absolute;
  top: 0;
  left: -60%;
  width: 230%;
  height: 100%;

  -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
    filter: grayscale(100%);
}

.accordion-slider ul li div a {
  display: block;
  height: 658px;
  width: 100%;
  position: relative;
  z-index: 3;
  vertical-align: bottom;
  padding: 15px 20px;
  box-sizing: border-box;
  color: #fff;
  text-decoration: none;
}

.accordion-slider ul li div a * {
  opacity: 0;
  margin: 0;
  width: 100%;
  text-overflow: ellipsis;
  position: relative;
  z-index: 5;
  white-space: nowrap;
  overflow: hidden;
}
.accordion-slider ul li div a h2 {
  font-family: Montserrat, sans-serif;
  text-overflow: clip;
  font-size: 32px;
  text-transform: uppercase;
  margin-bottom: 2px;
  top: 160px;
}

.accordion-slider ul li div a p {
  top: 160px;
  font-size: 18px;
  padding-left: 1em;
}

.accordion-slider ul li:nth-child(1) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington.jpg"); 
  background-position: top center;
}

.accordion-slider ul li:nth-child(2) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_cinema_flex_whale_wars_gavin_garrison.jpg"); 
  background-position: top center;
}

.accordion-slider ul li:nth-child(3) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington_bts.jpg"); 
  background-position: top center;
}

.accordion-slider ul li:nth-child(4) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_travel_rapidbox.jpg"); 
    background-position: top center;
}

.accordion-slider ul li:nth-child(5) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_enthusiast_portrait_photography_little_studio_basics_lights.jpg"); 
    background-position: top center;
}

.accordion-slider ul li:nth-child(6) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_flex_enthusiast_portrait_photography.jpg"); 
    background-position: top center;
}
.accordion-slider ul li:nth-child(7) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington.jpg"); 
    background-position: top center;
}

.accordion-slider ul li:nth-child(8) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_cinema_flex_whale_wars_gavin_garrison.jpg"); 
  background-position: top center;
}

.accordion-slider ul li:nth-child(9) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington_bts.jpg"); 
  background-position: top center;
}
.accordion-slider ul li:nth-child(10) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington.jpg"); 
    background-position: top center;
}

.accordion-slider ul li:nth-child(2) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_cinema_flex_whale_wars_gavin_garrison.jpg"); 
  background-position: top center;
}

.accordion-slider ul li:nth-child(3) > div{ 
  background-image: url("http://dev.fjwestcott.com/media/wysiwyg/home/home_ind_studio_portrait_photography_bob_harrington_bts.jpg"); 
  background-position: top center;
}

.accordion-slider ul li { background-size: cover; }
.accordion-slider ul.show li,
.accordion-slider ul:hover li { width: 10%; }
.accordion-slider ul.show li.active,
.accordion-slider ul:hover li:hover { width: 90%; }
.accordion-slider ul.show li.active > div,
.accordion-slider ul:hover li:hover > div{ 
  width: 170%; 
  background-position: center; 
  backface-visibility: hidden; 
  padding-left: 70%;

  -webkit-filter: grayscale(0%); /* Safari 6.0 - 9.0 */
    filter: grayscale(0%);
}
.accordion-slider ul:hover li:hover::before{
  background-color: rgba(0,0,0,0);
}

/*.accordion-slider ul:hover li:hover a { background: rgba(0, 0, 0, 0.4); }*/

.accordion-slider ul:hover li:hover a * {
  opacity: 1;
}
 @media screen and (max-width: 680px) {
  
  body { margin: 0; }
  .accordion-slider { height: auto; }

  .accordion-slider ul li,
  .accordion-slider ul li:hover,
  .accordion-slider ul:hover li,
  .accordion-slider ul:hover li:hover {
    position: relative;
    display: table;
    table-layout: fixed;
    width: 100%;
    -webkit-transition: none;
    transition: none;
  }
  .accordion-slider ul li div a * {
    opacity: 1;
  }
}

This Pen is owned by Prakash Prajapati on CodePen.

See more by @prakash-prajapati on CodePen

External CSS

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External JavaScript

https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js