.audio {
  display: inline-block;
  cursor: pointer;
  
  > span {
    --height: 18px;
    width: 3px;
    height: calc(var(--height) * var(--percent));
    background: var(--colors-primary-base);
    display: inline-block;
    transition: height .2s linear;


    &:not(:last-child) {
      margin-right: 2px;
    }
  }

  audio {
    display: none;
  }
}