body,
html {
  overflow: hidden;
  padding: 0;
  margin: 0;
  width: 100%;
  position: relative;
}
.music {
  cursor: pointer;
  z-index: 999999;
  position: absolute;
  top: 20px;
  right: 100px;
  width: 50px;
  height: 50px;
}
.music.play {
  animation: music_run 3s infinite linear;
}
@keyframes music_run {
  0% {
    -webkit-transform: rotateZ(0);
    transform: rotateZ(0);
  }
  100% {
    -webkit-transform: rotateZ(360deg);
    transform: rotateZ(360deg);
  }
}
.first footer img.gf {
  width: 360px;
  margin: 16px auto;
  cursor: pointer;
}
.first #v1,
.first .v1 {
  position: relative;
  left: 50%;
  margin-left: -960px;
  width: 1920px;
  min-height: 100%;
  z-index: 9999;
  /*灰色调*/
  /*-webkit-filter:grayscale(100%)*/
}
.first footer {
  width: 100%;
  z-index: 9999;
}
.first footer img.zzs {
  width: 100%;
  display: none;
}
.first .seevideo {
  position: fixed;
  left: 50%;
  width: 48px;
  margin-left: 50px;
  top: 567px;
  z-index: 99990;
}
.first .nav {
  width: 1200px;
  position: absolute;
  left: 50%;
  top: 0;
  z-index: 9999;
  margin-left: -600px;
}
.first .nav a {
  display: block;
  width: 100%;
  height: 100%;
}
.first .nav li {
  list-style: none;
  position: absolute;
  /*   background:#fff; */
}
.first .nav li:nth-of-type(3) {
  width: 300px;
  height: 300px;
  left: 90px;
}
.first .nav li:nth-of-type(6) {
  top: 221px;
  left: 536px;
  width: 114px;
  height: 72px;
  display: block;
  /* background:#000; */
}
.first .nav li:nth-of-type(1) {
  width: 200px;
  height: 200px;
  left: 90px;
  top: 350px;
}
.first .nav li:nth-of-type(5) {
  width: 200px;
  height: 200px;
  left: 270px;
  top: 550px;
}
.first .nav li:nth-of-type(4) {
  width: 300px;
  height: 300px;
  right: 200px;
}
.first .nav li:nth-of-type(2) {
  width: 200px;
  height: 200px;
  right: 120px;
  top: 366px;
}
.first footer {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
}
.first footer img {
  width: 100%;
  display: block;
}
.first .enter {
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99999;
  background: url(../images/enter.jpg) no-repeat center;
  background-size: cover;
  /* img{
  width:100%;
} */
}
.first .flyvideo0 {
  display: none;
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: #000;
  z-index: 99999;
}
.first .flyvideo0 .close {
  position: absolute;
  top: 40px;
  right: 200px;
}
.first .flyvideo0 video {
  width: 800px;
  display: block;
  margin: 100px auto;
}
@media (max-width: 1800px) {
  .first #v1,
  .first .v1 {
    position: relative;
    left: 50%;
    top: 0;
    margin-left: -900px;
    width: 1800px;
    min-height: 100%;
    /*灰色调*/
    /*-webkit-filter:grayscale(100%)*/
  }
}
@media (max-width: 1600px) {
  .first #v1,
  .first .v1 {
    position: relative;
    left: 50%;
    top: 0;
    margin-left: -800px;
    width: 1600px;
    min-height: 100%;
    /*灰色调*/
    /*-webkit-filter:grayscale(100%)*/
  }
  .first .nav li:nth-of-type(5) {
    top: 500px;
  }
  .first .nav li:nth-of-type(6) {
    top: 186px;
    left: 534px;
    width: 140px;
    height: 76px;
    display: block;
  }
  .first .nav li:nth-of-type(2) {
    width: 200px;
    height: 200px;
    right: 174px;
    top: 322px;
  }
  .first .seevideo {
    top: 490px;
  }
}
@media (max-width: 1550px) {
  .first .seevideo {
    top: 480px;
  }
}
@media (max-width: 1500px) {
  .first #v1,
  .first .v1 {
    position: relative;
    top: 0;
    left: 50%;
    margin-left: -750px;
    width: 1500px;
    min-height: 100%;
    /*灰色调*/
    /*-webkit-filter:grayscale(100%)*/
  }
  .first .nav li:nth-of-type(1) {
    left: 140px;
    top: 313px;
  }
  .first .nav li:nth-of-type(6) {
    top: 182px;
    left: 533px;
    width: 145px;
    height: 62px;
    display: block;
  }
  .first .nav li:nth-of-type(5) {
    width: 150px;
    height: 150px;
    top: 442px;
    left: 350px;
  }
}
@media (max-width: 1400px) {
  .first #v1,
  .first .v1 {
    position: relative;
    left: 50%;
    top: 0;
    margin-left: -700px;
    width: 1400px;
    min-height: 100%;
    /*灰色调*/
    /*-webkit-filter:grayscale(100%)*/
  }
  .first .nav li:nth-of-type(4) {
    height: 200px;
  }
  .first .nav li:nth-of-type(2) {
    width: 200px;
    height: 200px;
    right: 208px;
    top: 270px;
  }
  .first .nav li:nth-of-type(6) {
    top: 177px;
    left: 547px;
    width: 100px;
    height: 50px;
    display: block;
  }
  .first .seevideo {
    position: fixed;
    left: 50%;
    width: 48px;
    margin-left: 34px;
    top: 451px;
    z-index: 99990;
  }
}
@media (max-width: 1370px) {
  .first #v1,
  .first .v1 {
    position: relative;
    left: 50%;
    top: 0;
    margin-left: -680px;
    width: 1370px;
    min-height: 100%;
    /*灰色调*/
    /*-webkit-filter:grayscale(100%)*/
  }
  .first .nav li:nth-of-type(6) {
    top: 166px;
    left: 557px;
    width: 117px;
    height: 59px;
    display: block;
  }
  .first .seevideo {
    position: fixed;
    left: 50%;
    width: 48px;
    margin-left: 26px;
    top: 433px;
    z-index: 99990;
  }
}