*{
    margin: 0;
    padding: 0;
}
ul li{
    list-style: none;
}
body{
  font-size: 14px;
  color: #333;
}
.co-title{
    margin-bottom: 90px;
    margin-top: 100px;
    text-align: center;
    font-size: 30px;
    color: #000;
    display: inline-block;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}
.co-title:before{
    content: " ";
    display: block;
    width: 18px;
    height: 3px;
    background: #4286f3;
    position: relative;
    left: 50%;
    top: 55px;
    transform: translateX(-50%);
}
.ellipis2 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}
.ellipis2-blue {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  color: #4286f3;
}
@font-face {
  font-family: 'iconfont';  /* project id 1679545 */
  src: url('//at.alicdn.com/t/font_1679545_px85kcpjie.eot');
  src: url('//at.alicdn.com/t/font_1679545_px85kcpjie.eot?#iefix') format('embedded-opentype'),
  url('//at.alicdn.com/t/font_1679545_px85kcpjie.woff2') format('woff2'),
  url('//at.alicdn.com/t/font_1679545_px85kcpjie.woff') format('woff'),
  url('//at.alicdn.com/t/font_1679545_px85kcpjie.ttf') format('truetype'),
  url('//at.alicdn.com/t/font_1679545_px85kcpjie.svg#iconfont') format('svg');
}
.iconfont{
  font-family:"iconfont" !important;
  font-size:16px;font-style:normal;
  -webkit-font-smoothing: antialiased;
  -webkit-text-stroke-width: 0.2px;
  -moz-osx-font-smoothing: grayscale;
}

.top-title{
  font-size: 57px;
  font-weight: bold;
  margin-top: 250px;
  margin-left: 80px;
} 
* {
  margin: 0;
  padding: 0;
}

.top {
  width:100%;
  height: 600px;
  background: rgba(0, 0, 0, 0.9);
}

.moon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: #F5FFFA;
  box-shadow: 0 0 60px #F5FFFA;
  position: absolute;
  left: 80%;
  top: 150px;
  animation: myMoon 20s linear;
}

@keyframes myMoon {
  0% {
      left: 60%;
      top: 350px;
      opacity: 0;
  }

  100% {
      left: 80%;
      top: 150px;
      opacity: 1;
  }
}
.st{
  width: 3px;
  height: 3px;
  border-radius: 50%;
  opacity: 0;
  background-color: #fff;
  position: absolute;
  animation: myStar 2s ease-in-out infinite;
}

@keyframes myStar {
  0% {
      opacity: 0;
  }

  50% {
      opacity: 0.8;
  }

  100% {
      opacity: 0;
  }
}

.star {
  width: 1px;
  display: block;
  position: absolute;
  background-color: transparent transparent transparent rgba(255, 255, 255, .5);
  opacity: 0;
  animation: star 4s linear infinite;
}

.star::after {
  content: '';
  display: block;
  border: 1px solid #fff;
  border-width: 0px 90px 2px 90px;
  border-color: transparent transparent transparent rgba(255, 255, 255, .5);
  transform: rotate(-45deg);
}

@keyframes star {
  0% {
      opacity: 0;
  }

  30% {
      opacity: 1;
  }

  100% {
      opacity: 0;
      transform: translate(-500px, 300px);
  }
}