.story {
    width: 300px;
    height: 500px;
    background-color: black;
    margin: 0 auto;
    border-radius: 10px;
    position: relative;
    padding: 20px;
  }
  .story .wrap {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
  }
  .story .content {
    position: absolute;
    width: 100%;
    animation: show 7s linear;
  }
  .story .content p {
    color: navajowhite;
    text-indent: 2em;
    letter-spacing: 1px;
    font-weight: bold;
  }
  .story .wrap .mask {
    position: absolute;
    width: 100%;
    bottom: 0;
    height: 100px;
    background: linear-gradient(0deg, black, transparent);
  }
  .story .btn {
    text-align: center;
    width: 100px;
    height: 30px;
    bottom: 35px;
    position: absolute;
    color: burlywood;
    font-size: 14px;
    line-height: 30px;
    font-weight: bold;
    left: 50%;
    margin-left: -50px;
    background: radial-gradient(#ec7945, black 80%);
    cursor: pointer;
    opacity: 0;
    animation: btnShow 3s ease 6s  forwards;
  }

  @keyframes show {
    0% {
      top: 100%;
    }
    100% {
      top: 0px;
    }
  }

  @keyframes btnShow {
    0% {
        transform: scale(0);
        opacity: 0;
    }

    100% {
        transform: scale(1.1);
        opacity: 1;
    }
  }