body {
  padding: 0px;
  margin: 0 auto;
  width: 100%;
  height: 100%;
  background-size: 105%;
  font-family: "yahei";
}
.s-nav {
  background-color: #fff;
  margin-bottom: 0;
  position: fixed;
  z-index: 3;
  width: 100%;
}
.s-nav #s-nav {
  padding-top: 15px;
}
.s-nav .container-fluid {
  height: 69px;
}
.s-nav .navbar-brand {
  padding: 0 15px;
}
.s-nav li {
  width: 100px;
}
.s-nav li a {
  text-align: center;
  padding: 15px 20px;
  transition: all 2s;
  white-space: nowrap;
}
.s-nav li:nth-child(5) {
  width: 112px;
}
.s-nav li:nth-child(6) {
  width: 133px;
}
.s-nav .dropdown-menu {
  min-width: 100px;
}
.bigbg .container {
  width: 100%;
  margin: 0 auto;
  position: relative;
  bottom: 0;
  left: 0;
  right: 0;
  top: 67px;
}
.bigbg .container .big-bg {
  width: 100%;
}
.bigbg .container .big-bg img {
  width: 100%;
  z-index: 1;
}
.bigbg .container .img-about {
  position: absolute;
  top: 14em;
  left: 36%;
}
.bigbg .container .img-about .text-about {
  font-size: 2.2em;
  color: #ffffff;
  animation-name: test;
  animation-duration: 3s;
  animation-fill-mode: forwards;
}
.bigbg .container .img-word {
  position: absolute;
  top: 13em;
  left: 50%;
  font-size: 0.9em;
  color: #dddddd;
  line-height: 14px;
  animation-name: test;
  animation-duration: 2s;
  animation-fill-mode: forwards;
}
.bigbg .container .img-english {
  position: absolute;
  top: 26em;
  left: 50%;
  font-size: 0.7em;
  line-height: 8px;
  color: #94908F;
  animation-name: test;
  animation-duration: 2s;
  animation-fill-mode: forwards;
}
.img_bg {
  position: absolute;
  top: 67px;
  bottom: 0;
  left: 0;
  right: 0;
  background: url(../img/aboutus-bg_01.png) no-repeat;
  background-size: cover;
}
.display {
  animation-name: xianshi;
  animation-duration: 2s;
  animation-fill-mode: forwards;
}
@keyframes xianshi {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes test {
  0% {
    left: 49%;
    opacity: 0;
  }
  100% {
    left: 51%;
    opacity: 1;
  }
}
.text-about-phone {
  font-size: 2.2em;
  color: #000000;
  animation-name: test;
  animation-duration: 3s;
  animation-fill-mode: forwards;
}
.content {
  padding-top: 100px;
}
.content .img-english-phone {
  font-size: 8px;
  line-height: 15px;
}
.content .kuan {
  margin-top: 40px;
}
.content .xiamian {
  margin-bottom: 50px;
}
@media screen and (min-width: 1200px) {
  .phone {
    display: none;
  }
}
@media screen and (max-width: 768px) {
  .pc {
    display: none;
  }
}