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CSS

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HTML 

              
                <section class="section section--hero">
      <div class="container">
        <div class="hero-content">
          <h1 class="title">3D Waving Cards</h1>
          <p class="description">This is a codepen for hover effect making the cards look like a wave with no JavaScript.</p>
        </div>
      </div>
    </section>
    <section class="section section--body">
      <div class="container-fluid">
        <div id="slider-container" class="slider">
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-1.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Aurelius Mindweaver</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-2.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Seraphina Dreamshaper</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-4.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Cassian Mindbender</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-10.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Lucius Thoughtguard</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-8.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Thalia Mindtide</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-6.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Aurora Mindseer</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <div class="slider-item">
            <div class="slider-item__wrapper">
              <span class="slider-item__label">Minion</span>
              <div class="slider-item__image">
                <img src="https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/slider/slider-5.jpg" alt="">
              </div>
              <div class="slider-item__content">
                <h3 class="title">Selene Dreamstrider</h3>
                <p class="description">In the hail of midnight discoveries you can find the Slide Item.</p>
              </div>
            </div>
          </div>
          <!-- More slides -->
        </div>
      </div>
    </section>
!

CSS 

              
                /* 1. INITIALIZATION STYLING STUFF YOU DON'T REALLY CARE ABOUT ( FOLLOW THE THESE NUMBERED COMMENTS ) */
body, html {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden; /* Prevents horizontal scroll */
}
div {
    box-sizing: border-box;
}
.container {
    max-width: 1440px;
    padding: 0 24px;
    margin: 0 auto;
    width: 100%;
}
.container-fluid {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
}
.section--body {
    padding: 0 0 120px;
    background-color: #000;
    margin-top: -164px;
}
.section--hero {
    padding: 260px 0 264px;
    background-color: #111;
    background-image: url(https://thanosmatsoukas.gr/wp-content/themes/thanosmatsoukas/public/images/codepen/3d-waving-cards/backgrounds/hero-background.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}
.section--hero::before {
    position: absolute;
    content: "";
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: block;
    background-color: #000;
    opacity: 0.5;
}
.hero-content {
    position: relative;
}
.section--hero .title {
    color: #fff;
    font-size: 72px;
    margin: 0 0 16px;
    font-weight: 500;
}
.section--hero .description {
    margin: 0 0 16px;
}
.section--hero p {
    color: #cccccc;
}

/* 2. SLIDER STYLING STUFF. THE TRANSITIONS + THE .slider CLASS BELOW ARE IMPORTANT */
.slider {
    display: flex;
    flex-wrap: wrap;
    margin-left: -8px;
    margin-top: -8px;

    /* IMPORTANT PART*/
    transform-style: preserve-3d;
    transform: perspective(1000px);
}
.slider-item {
    width: 100%;
    max-width: 14.28%;
    flex: 0 0 14.28%;
   
    padding-left: 8px;
    padding-top: 8px;

    transition: all 0.3s ease-in-out;
    filter: brightness(1);
}

.slider-item__content {
    position: relative;
    z-index: 15;
}
.slider-item__image {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    z-index: 5;
}
.slider-item__image img {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    object-fit: cover;
}
.slider-item__wrapper {
    background-color: #111;
    padding: 128px 16px 16px;
    color: #fff;
    position: relative;
    min-height: 320px;

    display: flex;
    align-items: end;
}
.slider-item__wrapper::before {
   content: "";
   width: 100%;
   height: 100%;
   position: absolute;
   display: block;
   top: 0;
   left: 0;
   right: 0;
   bottom: 0;
   background: rgb(0,0,0,0.5);
   background: linear-gradient(0deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.5) 100%);
   transition: all ease-out 0.5s;
   z-index: 10;
}
.slider-item__wrapper .title {
    color: #fff;
    font-size: 24px;
    margin: 0 0 4px 0;
    font-weight: 500;
    line-height: 1.05;
}
.slider-item__wrapper .description {
    color: #ececec;
    font-size: 12px;
    margin: 0;

    opacity: 0;
    height: 100%;
    max-height: 0;
    overflow: hidden;
    transition: all ease-out 0.8s;
}
.slider-item__label {
    position: absolute;
    top: 18px;
    left: 16px;
    background-color: #804ec3;
    color: #c6aeed;
    display: inline-block;
    padding: 6px 14px;
    border-radius: 14px;
    line-height: 1;
    z-index: 20;
    font-size: 12px;
    font-weight: 600;
}
.slider-item:hover .slider-item__wrapper::before {
    background: rgb(0,0,0,0.5);
    background: linear-gradient(0deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 100%);
}
.slider-item:hover .description {
    max-height: 150px;
    opacity: 1;
}

/* THE WAVING HOVER EFFECT ON THE NEXT + PREVIOUS SLIDER ELEMENTS */
.slider:hover .slider-item:not(:hover){
    filter: brightness(0.2) ;
}
.slider:hover .slider-item .slider-item__wrapper::before{
    backdrop-filter: blur(2px);
}
.slider .slider-item:hover {
    filter: brightness(1);
    transform: translateZ(164px);
}
.slider .slider-item:hover + * {
    filter: brightness(0.6) !important;
    transform: translateZ(112px) rotateY(20deg);
}
.slider .slider-item:hover + * + * {
    filter: brightness(0.4) !important;
    transform: translateZ(36px) rotateY(8deg);
}
.slider .slider-item:hover + * + * + * {
    filter: brightness(0.2) !important;
    transform: translateZ(15px) rotateY(5deg);
}
.slider .slider-item:has( + *:hover ) {
    filter: brightness(0.6) !important;
    transform: translateZ(112px) rotateY(-20deg);
}
.slider .slider-item:has( + * + *:hover ) {
    filter: brightness(0.4) !important;
    transform: translateZ(36px) rotateY(-8deg);
}
.slider .slider-item:has( + * + * + *:hover ) {
    filter: brightness(0.2) !important;
    transform: translateZ(15px) rotateY(-5deg);
}

/* BLUR THE slider-item__wrapper::before PSEUDO ELEMENT ON :HOVER */
.slider .slider-item:hover .slider-item__wrapper::before {
    backdrop-filter: blur(0) !important;
}
.slider .slider-item:hover + * .slider-item__wrapper::before {
    backdrop-filter: blur(0.7px) !important;
}
.slider .slider-item:hover + * + * .slider-item__wrapper::before {
    backdrop-filter: blur(1px) !important;
}
.slider .slider-item:hover + * + * + * .slider-item__wrapper::before {
    backdrop-filter: blur(2px) !important;
}
.slider .slider-item:has( + *:hover .slider-item__wrapper::before ) {
    backdrop-filter: blur(0.7px) !important;
}
.slider .slider-item:has( + * + *:hover .slider-item__wrapper::before ) {
    backdrop-filter: blur(1px) !important;
}
.slider .slider-item:has( + * + * + * :hover .slider-item__wrapper::before ) {
    backdrop-filter: blur(2px) !important;
}
!

JS 

              
                document.getElementsByTagName("h1")[0].style.fontSize = "6vw";
!
999px

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