body * {
  box-sizing: border-box;
  flex-shrink: 0;
}
body {
  font-family: PingFangSC-Regular, Roboto, Helvetica Neue, Helvetica, Tahoma,
    Arial, PingFang SC-Light, Microsoft YaHei;
  margin: 0;
  padding: 0;
}
button {
  margin: 0;
  padding: 0;
  border: 1px solid transparent;
  outline: none;
  background-color: transparent;
}
a {
  text-decoration: none;
  display: block;
}
button:active {
  opacity: 0.6;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.flex-row {
  display: flex;
  flex-direction: row;
}
.justify-start {
  display: flex;
  justify-content: flex-start;
}
.justify-center {
  display: flex;
  justify-content: center;
}

.justify-end {
  display: flex;
  justify-content: flex-end;
}
.justify-evenly {
  display: flex;
  justify-content: space-evenly;
}
.justify-around {
  display: flex;
  justify-content: space-around;
}
.justify-between {
  display: flex;
  justify-content: space-between;
}
.align-start {
  display: flex;
  align-items: flex-start;
}
.align-center {
  display: flex;
  align-items: center;
}
.align-end {
  display: flex;
  align-items: flex-end;
}
@media (max-width: 1400px) {
  .continer-box {
    width: 1050px !important;
  }
}
@media (min-width: 1400px) {
  .continer-box {
    width: 1200px !important;
  }
}
/* nav */
.nav {
  height: 60px;
  background-color: rgba(5, 30, 58, 1);
  width: 100%;
}
.nav-item {
  height: 60px;
  overflow-wrap: break-word;
  color: rgba(255, 255, 255, 1);
  padding-top: 22px;
  width: 206px;
  font-size: 12px;
  text-align: center;
}
.nav-item.active {
  color: rgba(115, 171, 220, 1);
  background-color: rgba(5, 83, 189, 1);
  font-size: 12px;
}
/* banner */
.banner {
  z-index: 3;
  height: 600px;
  overflow: hidden;
  /* background: url(../images/banner-1.jpg) 100% no-repeat; */
  /* width: 1920px; */
  position: relative;
  /* padding: 158px 0 0 360px; */
  box-sizing: border-box;
}

.banner-txt {
  z-index: 5;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 218px;
  /* width: 1040px; */
  height: 112px;
  display: inline-block;
  overflow-wrap: break-word;
  color: rgba(255, 255, 255, 1);
  font-size: 80px;
  white-space: nowrap;
  line-height: 112px;
}
.banner-pic {
  z-index: 4;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 600px;
}
.banner-special {
  z-index: 3;
  height: 300px;
  overflow: hidden;
  background: url(../images/banner-1.png) 100% no-repeat;
  background-position-x: right;
  background-position-y: bottom;
  background-size: 1920px 300px;
  /* width: 1920px; */
  position: relative;
  /* padding: 158px 0 0 360px; */
  box-sizing: border-box;
}

.banner-special .banner-txt {
  z-index: 5;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  /* width: 1040px; */
  height: 112px;
  display: inline-block;
  overflow-wrap: break-word;
  color: rgba(255, 255, 255, 1);
  font-size: 80px;
  white-space: nowrap;
  line-height: 112px;
}
.banner-special .banner-pic {
  z-index: 4;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 300px;
}
/* footer  */
.footer {
  height: 140px;
  background-color: rgba(5, 30, 58, 1);
  width: 100%;
}

.copyright {
  width: 1159px;
  height: 17px;
  margin: 50px auto 0;
}

.copyright .txt {
  width: 439px;
  height: 17px;
  display: block;
  overflow-wrap: break-word;
  color: rgba(80, 99, 116, 1);
  font-size: 12px;
  font-family: PingFangSC-Semibold;
  white-space: nowrap;
  line-height: 17px;
  text-align: left;
}

.copyright .nav-txt {
  /* width: 48px; */
  height: 17px;
  display: block;
  overflow-wrap: break-word;
  color: rgba(255, 255, 255, 1);
  font-size: 12px;
  font-family: PingFangSC-Semibold;
  white-space: nowrap;
  line-height: 17px;
  text-align: left;
  margin-left: 40px;
}

.url {
  width: 1159px;
  height: 17px;
  margin: 10px auto 46px;
}

.url .txt {
  width: 262px;
  height: 17px;
  display: block;
  overflow-wrap: break-word;
  color: rgba(80, 99, 116, 1);
  font-size: 12px;
  font-family: PingFangSC-Semibold;
  white-space: nowrap;
  line-height: 17px;
  text-align: left;
}