.content-grid-hidden {
    height: 0px;
    opacity: 0;
    overflow: hidden;
    transition-timing-function: cubic-bezier(0.4, 0, 1, 1);
    transition-duration: 500ms;
  }
    .content-grid-hidden.show {
      height: auto;
      opacity: 1;
      overflow: auto;
      transition-timing-function: cubic-bezier(0.4, 0, 1, 1);
      transition-duration: 500ms;
    }