on .cassette .cassette__center::before {
animation: rotateCassette 5s linear infinite
}

.cassette__center::before {
right: 0
}</pre>
          </div>
        </div>
      </article>
      <aside>
        <div class="block">
          <h2>Animation</h2>
          <div class="ani box state animation">

            <div class="cassette">
              <div class="cassette__center">
                <div class="cassette__center-item"></div>
                <div class="cassette__center-divider">l|l|l|l</div>
   