.cont {
  width: 1300px;
  margin: 0 auto;
}

.main_fixed {
  position: fixed;
  top: 300px;
  right: 50px;
  z-index: 9999;
}

.main_fixed ul {}

.main_fixed ul li {
  margin-bottom: 20px;
  width: 60px;
  height: 60px;
  background: #fff;
  border-radius: 60px;
  position: relative;
  border: 1px solid #e4e4e4;
}

.main_fixed ul li a {
  display: block;
}

.main_fixed ul li img {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  margin: 0 auto;
}

.head {
  position: fixed;
  width: 100%;
  background: #fff;
  z-index: 9999;
}

.mb_head,
#mb_nav {
  display: none;
}

.pc_head .top_head {
  width:1400px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  width: 300px;
}

.logo a {}

.logo img {}

.nav {
  width: 900px;
}

.nav ul {
  display: flex;
}

.nav ul li {
  width: 25%;
}

.nav ul li a {
  display: block;
  font-size: 20px;
  padding: 50px 0;
  font-weight: 500;
  color: #222;
  text-align:center;
}

.sub_border{
  border-top: 1px solid #e4e4e4;
  border-bottom: 1px solid #e4e4e4;
width:100%;}

.submenu_wrap {
 
width:1400px;margin:0 auto;position:relative;overflow:hidden;
}
.head_symbol{position:absolute;top:50px;left:50px;width:300px;
  opacity:0.5;}
.submenu_cont {
   display: flex;
    width:900px;
  margin-left:500px;
}

.submenu {
  width:20%;
  border:1px solid #e4e4e4;
  border-top:0;
  border-right:0;
  padding:15px 0;
}
.submenu:hover{background:#f8f8f8;}
.submenu li {
  position: relative;
}


.submenu:last-child{
  border-right:1px solid #e4e4e4;
}

.submenu li a {
  padding: 10px 0;
  display: block;
  width:100%;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  color: #222;
}

.submenu li a:hover {
  color: #f6a000
}

@media screen and (max-width:799px) {
  .pc_head {
    display: none
  }

  .mb_head {
    padding: 0 20px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .mb_logo {
    width: 200px;
  }

  .mb_btn {
    display: flex;
    align-items: center;
  }

  .mb_call {
    width: 25px;
    height: 25px;
    margin-right: 15px;
  }

  .mb_menu_btn {
    cursor: pointer;
  }

  .mb_menu_btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: #2c2d87;
    margin-bottom: 7px;
    transition: all 0.3s;
  }

  .mb_menu_btn span:last-child {
    margin-bottom: 0;
  }

  .mb_menu_open span:nth-child(1) {
    transform: rotate(45deg);
  }

  .mb_menu_open span:nth-child(3) {
    transform: rotate(-45deg);
    margin-top: -9px;
  }

  .mb_menu_open span:nth-child(2) {
    display: none;
  }

  #mb_nav {
    z-index: 9999;
    width: 100%;
    height: auto;
    padding: 30px;
    background: #F6A000;
    display: none;
  }

  #mb_nav > ul {}

  #mb_nav > ul > li {}

  #mb_nav > ul > li > a {
    color: #fff;
    display: block;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding: 20px 10px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  #mb_nav > ul > li:nth-child(1) > a {
    padding-top: 0;
  }

  #mb_nav > ul > li > a img {
    display: block;
    width: 12px;
    transform: rotate(180deg);
    transition: all .3s;
  }

  .arrow_rotate {
    transform: rotate(360deg) !Important;
  }

  .mb_submenu {
    display: none;
    padding: 15px;
    padding-bottom: 0;
  }

  .mb_submenu li {}

  .mb_submenu li a {
    color: #fff;
    display: block;
    font-size: 14px;
    padding: 5px 0;
    opacity: 0.8;
  }

  .main_fixed {
    top: auto;
    bottom: 30px;
    right: 30px;
  }

  .main_fixed ul li {
    width: 35px;
    height: 35px;
    margin-bottom: 13px;
  }

  .main_fixed ul li img {
    width: 20px;
    height: 20px;
  }

}