.top{
  position: relative;
  width: 100%;
}
.top .head{
  position: absolute;
  top: 28px;
}
.top .head .logo{
  width: 160px;
  margin-left: 86px;
  float: left;
}
.nav{
  display: flex;
  color: #fff;
  float: left;
  margin-left: 74px;
}
.nav a{
  color: #fff
}
.nav li{
  margin-right: 74px;
  font-size: 24px;
}
/* .nav li:nth-child(1){
  color: #8ad8ff;
  padding-bottom: 30px;
  background-image: url('../images/1.png');
  background-repeat: no-repeat;
  background-position: center 30px;
} */
.bottom{
  margin-top: 62px;
}
.bottom .bottom_link{
  display: flex;
  width: 800px;
  margin: 0 auto;
}
.bottom .bottom_link li{
  flex: 1;
  text-align: center;
  font-size: 20px;
}
.bottom .copyright{
  width: 100%;
  text-align: center;
  margin-top: 36px;
  margin-bottom: 62px;
  font-size: 18px;
}