.banner {
    width: 100%;
    height: 28vh;
    overflow: hidden;
    position: relative;
    background-color: #000;
  }

  .banner img {
    float: left;
    width: 100%;
  }
  .abstract-text{
    padding: 0px;
    line-height: 30px;
  }

  .qipao {
    position: absolute;
    width: 50%;
    height: 60%;
    right: 0;
    top:0;
    bottom: 0;
    margin: auto;
  }

  .banner video {
    float: left;
    width: 100%;
    height: auto;
  }

  .qipao div {
    padding: 30px;
    background: rgba(255, 255, 255, .2);
    position: absolute;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #86A2E3;
    transform: scale(.8, .8);
    opacity:0;
    text-align: center;
    color: #fff;
    font-size: 100%;
    box-shadow: 0 0 15px rgba(134,162,227,.5);
  }
  .qipao .donghua{
    animation: myfirst 10s;
    animation-iteration-count: infinite;
  }
  @keyframes myfirst {
    0% {
      transform: scale(.8, .8);
      opacity:0;
    }

    50% {
      opacity:1;
    }

    100% {
      transform: scale(1.2, 1.2);
      opacity:0;
    }
  }

  .qipao .div_1 {
    left: 20%;
    top: 5%;
  }

  .qipao .div_2 {
    left: 30%;
    top: 27%;
  }

  .qipao .div_3 {
    left: 20%;
    top: 50%;
  }

  .qipao .div_4 {
    right: 30%;
    top: 40%;
  }

  .qipao .div_5 {
    left: 20%;
    bottom: 0%;
  }

  .qipao .div_6 {
    left: 55%;
    top: 70%;
  }

  .qipao .div_7 {
    left: 80%;
    top: 70%;
  }

  .qipao .div_8 {
    left: 70%;
    top: 20%;
  }

  .qipao .div_9 {
    left: 65%;
    top: 35%;
  }

  .qipao .div_10 {
    left: 55%;
    top: 45%;
  }