Как создать эффект marquee без использования тега <marquee> (с помощью CSS, JavaScript и jQuery)

Source Code: (back to article)

<!DOCTYPE html>
<html>
  <head>
    <title>Заголовок документа</title>
    <style>
      .marquee {
      margin: 0 auto;
      width: 600px;
      height: 30px;
      white-space: nowrap;
      overflow: hidden;
      box-sizing: border-box;
      position: relative;
      }
      .marquee:before, .marquee:after {
      position: absolute;
      top: 0;
      width: 50px;
      height: 30px;
      content: "";
      z-index: 1;
      }
      .marquee:before {
      left: 0;
      background: linear-gradient(to right, #ccc 10%, transparent 80%);
      }
      .marquee:after {
      right: 0;
      background: linear-gradient(to left, #ccc 10%, transparent 80%);
      }
      .marquee__content {
      width: 300%;
      display: flex;
      line-height: 30px;
      animation: marquee 10s linear infinite forwards;
      }
      .marquee__content:hover {
      animation-play-state: paused;
      }
      .list-inline {
      display: flex;
      justify-content: space-around;
      width: 33.33%;
      /* reset list */
      list-style: none;
      padding: 0;
      margin: 0;
      }
      @keyframes marquee {
      0% {
      transform: translateX(0);
      }
      100% {
      transform: translateX(-66.6%);
      }
      }
    </style>
  </head>
  <body>
    <div class="marquee">
      <div class="marquee__content">
        <ul class="list-inline">
          <li>Текст 1</li>
          <li>Текст 2</li>
          <li>Текст 3</li>
          <li>Текст 4</li>
          <li>Текст 5</li>
        </ul>
        <ul class="list-inline">
          <li>Текст 1</li>
          <li>Текст 2</li>
          <li>Текст3</li>
          <li>Текст 4</li>
          <li>Текст 5</li>
        </ul>
        <ul class="list-inline">
          <li>Текст 1</li>
          <li>Текст 2</li>
          <li>Текст 3</li>
          <li>Текст 4</li>
          <li>Текст 5</li>
        </ul>
      </div>
    </div>
  </body>
</html>