@keyframes toggle-animation {
  0% {
    top: -2px;
  }
  50% {
    top: 2px;
  }
  100% {
    top: -2px;
  }
}
.code {
  position: relative;
  min-width: 200px;
  background-color: #fefefe;
  .content {
    overflow-y: hidden;
    overflow-x: auto;
    scroll-behavior: smooth;
    transition: max-height 300ms;
    & > pre {
      font-size: 12px;
      line-height: 32px;
      min-width: 100%;
      display: inline-block;
      & > * {
        height: 32px;
        text-wrap: nowrap;
        counter-increment: line;
        &::before {
          position: relative;
          content: counter(line);
          display: inline-block;
          width: 20px;
          text-align: center;
          font-size: 10px;
          color: lightgray;
          z-index: 1;
        }
      }
      & > *:nth-child(odd) {
        background-color: #f9f9f9;
      }
      .line {
        position: relative;
      }
    }
  }
  .toggle {
    position: sticky;
    bottom: 0;
    left: 0;
    z-index: 1;
    text-align: center;
    width: 100%;
    background: linear-gradient(to top, white, rgba(255, 255, 255, 0.6));
    cursor: pointer;
    .icon {
      position: relative;
      animation: toggle-animation 500ms ease infinite;
    }
  }
}