What is Google search result page Carousel technologies?

var slider = document.querySelector('.items');
var isDown = false;
var startX;
var scrollLeft;
slider.addEventListener('mousedown', function (e) {
  isDown = true;
  slider.classList.add('active');
  startX = e.pageX - slider.offsetLeft;
  scrollLeft = slider.scrollLeft;
});
slider.addEventListener('mouseleave', function () {
  isDown = false;
  slider.classList.remove('active');
});
slider.addEventListener('mouseup', function () {
  isDown = false;
  slider.classList.remove('active');
});
slider.addEventListener('mousemove', function (e) {
  if (!isDown) return;
  e.preventDefault();
  var x = e.pageX - slider.offsetLeft;
  var walk = (x - startX) * 3; //scroll-fast

  slider.scrollLeft = scrollLeft - walk;
});

@import url(https://fonts.googleapis.com/css?family=Rubik);
body,
html {
  color: #fff;
  text-align: center;
  background: #efefef;
  font-family: Helvetica, sans-serif;
  margin: 0;
}

.grid-container {
  background: #efefef;
  font-family: 'Rubik', sans-serif;
}

@supports (display: grid) {
  .grid-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: auto 1fr auto;
    grid-template-areas: "header header header" "title title footer" "main main main";
  }
  @media screen and (max-width: 500px) {
    .grid-container {
      grid-template-columns: 1fr;
      grid-template-rows: 0.3fr 1fr auto 1fr;
      grid-template-areas: "header" "title" "main" "footer";
    }
  }

  .grid-item {
    color: #fff;
    background: skyblue;
    padding: 3.5em 1em;
    font-size: 1em;
    font-weight: 700;
  }

  .header {
    background-color: #092a37;
    grid-area: header;
    padding: 1em;
  }

  .title {
    color: #555;
    background-color: #f4fbfd;
    grid-area: title;
  }

  .main {
    color: #959595;
    background-color: white;
    grid-area: main;
    padding: 0;
    overflow-x: scroll;
    overflow-y: hidden;
  }

  .footer {
    background-color: #5bbce4;
    grid-area: footer;
    padding: 0.6em;
  }

  .items {
    position: relative;
    width: 100%;
    overflow-x: scroll;
    overflow-y: hidden;
    white-space: nowrap;
    transition: all 0.2s;
    transform: scale(0.98);
    will-change: transform;
    user-select: none;
    cursor: pointer;
  }

  .items.active {
    background: rgba(255, 255, 255, 0.3);
    cursor: grabbing;
    cursor: -webkit-grabbing;
    transform: scale(1);
  }

  .item {
    display: inline-block;
    background: skyblue;
    min-height: 100px;
    min-width: 400px;
    margin: 2em 1em;
  }
  @media screen and (max-width: 500px) {
    .item {
      min-height: 100px;
      min-width: 200px;
    }
  }
}
a {
  display: block;
  color: #c9e9f6;
  text-decoration: underline;
  margin: 1em auto;
}
a:hover {
  cursor: pointer;
}

p {
  text-align: left;
  text-indent: 20px;
  font-weight: 100;
}

i {
  color: skyblue;
}

<div class="grid-container">
  <main class="grid-item main">
    <div class="items">
      <div class="item item1"></div>
      <div class="item item2"></div>
      <div class="item item3"></div>
      <div class="item item4"></div>
      <div class="item item5"></div>
      <div class="item item6"></div>
      <div class="item item7"></div>
      <div class="item item8"></div>
      <div class="item item9"></div>
      <div class="item item10"></div>
    </div>
  </main>
</div>