* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul,
li {
  list-style: none;
}
a {
  text-decoration: none;
}
img {
  vertical-align: middle;
}
html,
body {
  width: 100%;
  height: 100%;
  font-family: "Microsoft YaHei";
}
.clearfix::after {
  content: "";
  display: block;
  clear: both;
}
.left {
  float: left;
}
.right {
  float: right;
}
@media (min-width: 991px) {
  .wrap {
    width: 1200px;
    margin: 0 auto;
  }
  header {
    background-color: #403e3e;
    height: 75px;
  }
  header .header {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
    height: 100%;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
        -ms-flex-pack: justify;
            justify-content: space-between;
    padding: 0 80px;
  }
  header .header .logo {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
  }
  header .header .logo a {
    width: 200px;
  }
  header .header .logo a img {
    width: 100%;
    height: 100%;
  }
  header .header .nav {
    height: 100%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
  }
  header .header .nav ul {
    height: 100%;
  }
  header .header .nav ul li {
    float: left;
    text-align: center;
    height: 100%;
  }
  header .header .nav ul li a {
    position: relative;
    display: inline-block;
    font-size: 14px;
    color: #fff;
    padding: 10px 0px;
    margin: 0 20px;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  header .header .nav ul li a::after {
    position: absolute;
    bottom: 0;
    left: 0;
    display: block;
    content: "";
    width: 0%;
    background-color: #fff;
    height: 1px;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  header .header .nav ul li:hover a::after {
    width: 100%;
  }
  header .header .nav ul .active::after {
    width: 100%;
  }
  header .header .nav ul .active a {
    color: #fff;
    font-weight: bold;
  }
  header .header .header-phone {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
    font-weight: bold;
    font-style: italic;
    color: #FFf;
  }
  header .header .header-phone img {
    margin: 0 10px;
  }
}
@media (max-width: 990px) {
  .wrap {
    width: 100%;
    margin: 0 auto;
  }
  header {
    background-color: #403e3e;
    height: 75px;
    display: none;
  }
  header .header {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
    height: 100%;
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
        -ms-flex-pack: justify;
            justify-content: space-between;
    padding: 0 80px;
  }
  header .header .logo {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
  }
  header .header .logo a {
    width: 200px;
  }
  header .header .logo a img {
    width: 100%;
    height: 100%;
  }
  header .header .nav {
    height: 100%;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
  }
  header .header .nav ul {
    height: 100%;
  }
  header .header .nav ul li {
    float: left;
    text-align: center;
    height: 100%;
  }
  header .header .nav ul li a {
    position: relative;
    display: inline-block;
    font-size: 14px;
    color: #fff;
    padding: 10px 0px;
    margin: 0 20px;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  header .header .nav ul li a::after {
    position: absolute;
    bottom: 0;
    left: 0;
    display: block;
    content: "";
    width: 0%;
    background-color: #fff;
    height: 1px;
    -webkit-transition: all 0.5s;
            transition: all 0.5s;
  }
  header .header .nav ul li:hover a::after {
    width: 100%;
  }
  header .header .nav ul .active::after {
    width: 100%;
  }
  header .header .nav ul .active a {
    color: #fff;
    font-weight: bold;
  }
  header .header .header-phone {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
        -ms-flex-align: center;
            align-items: center;
    font-weight: bold;
    font-style: italic;
    color: #FFf;
  }
  header .header .header-phone img {
    margin: 0 10px;
  }
}