head,body,ul,div,li,a,p,h2{
  padding: 0;
  margin: 0;
  list-style: none;
}
body,html{
  width: 100%;
  height: 100%;
  background-color:  #4451AD;
}
header{
  height: 0.8rem;
  display: flex;
}
header .header_left{
  width: 30%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
header .header_left img{
  height: 0.8rem;
}
header .header_right{
  width: 70%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-evenly;
}
header .header_right a{
  text-decoration: none;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.2rem;
}
header .header_right a img{
  width: 0.4rem;
  height: 0.4rem;
}
header .header_middle{
  display: none;
}
header .header_return{
  display: none;
}







@media screen and (max-width:770px){
  header{
    width: 100%;
    z-index: 99;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.4rem;
    margin-top: 0.2rem;
  }
  
  header .header_return{
    display: block;
    padding-left: 0.3rem;
  }
  header .header_return img{
    height: 1rem;
  }
  header .header_left img{
    height: 1.2rem;
  }
  header .header_right{
    display: none;
  }
  header .header_middle{
    display: block;
    padding-right: 0.3rem;
  }
  header .header_middle a{
    width: 0.8rem;
    height: 0.8rem;
  }
  header .header_middle a img{
    width: 0.8rem;
    height: 0.8rem;
  }


  
  .menu{
    position:absolute;
    width: 100%;
    background-color:#4451AD ;
    top: 1rem;
    display: flex;
    flex-wrap: wrap;
  }
  .menu a{
    width: 100%;
    background-color: #3C4796;
    height: 1rem;
    border-radius: 0.2rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    margin-top: 0.2rem;
    padding-left: 0.2rem;
  }
  .menu a img{
    height: 75%;
    border-radius: 0.2rem 0 0 0.2rem;
  }
  .menu a span{
    font-size: 0.2rem;
    color: #fff;
    margin-left: 0.2rem;
  }


}
@media screen and (min-width:767px) and (max-width:1200px){
  header{
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  header .header_right{
    display: none;
  }
  header .header_middle{
    display: block;
  }
  header .header_middle a{
    width: 0.8rem;
    height: 0.8rem;
  }
  header .header_middle a img{
    width: 0.8rem;
    height: 0.8rem;
  }
}





/* 底部 */
.footer{
  width: 100%;
  height: 0.5rem;
  line-height: 0.5rem;
  display: flex;
  justify-content: space-around;
  margin-top: 0.1rem;
  padding:0.2rem 0 0.2rem ;
  border-top: 0.02rem #3C4796 solid;
}
.footer a{
  text-decoration: none;
  outline: none;
  color: #fff;
  text-align: center;
}




/* 广告 */
.advertisement{
  width: 100%;
  /* height: 4rem; */
  text-align: center;
  color: #272424b2;
  background-color:#3C4796;
  border-radius: 0.2rem;
  margin-top: 0.1rem;
}