.inner-container img {
      display:block;
      position: absolute;
      height:500px;
      opacity: 0;
      transition: opacity 300ms ease-in;
      border-radius: 4px;
}

    .inner-container img+img {
      /* opacity: 1; */
    }

    div.carousel-container {
      display: block;
      position: relative;
      width:100%;
      height:500px;
      margin:100px auto 0 auto;
    }