html,body{
    margin: auto;
    padding: auto;
    /*width: 320px;*/
    /*max-width: 640px;*/
    width: 100%;
    font-size: 16px;
    line-height: 25px;
    font-family: "Microsoft YaHei";
}
html{
    background: #fff;
}
li{
    list-style: none;
}
ul{
    margin-block-start: 0em;
    margin-block-end: 0em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    padding-inline-start: 0px;
}
a{
    text-decoration: none;
}
a:hover{
    text-decoration: none;
}
.clearfix{
    zoom: 1;
}
header,section,footer{
    display: block;
    width:100%;
    margin: auto;
}
header{
    background: #fff;
}
img{
    width: 100%;
    height: 100%;
}
.head_top{
    width: 95%;
    margin: auto;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-content: center;
    align-items: center;
}
.head_logo{
  width: 25%;
  height: 60px;
  line-height: 60px;
  display: inline-block;
  float: left;
}
.img_logo{
    width: 85px;
    margin: auto;
    height: 34px;
    vertical-align: middle;
    display: inline-block;
}
.navbar-fixed-top{
    width: 74%;
    position: inherit;
    float: right;
}
.head_nav{
    width: 74%;
    margin: auto;
    display: inline-block;
    float: left;
}
/*.head_nav ul{*/
    /*width: 100%;*/
    /*display: flex;*/
    /*flex-direction: row;*/
    /*flex-wrap: wrap;*/
    /*justify-content: space-between;*/
    /*align-items: flex-start;*/
/*}*/
/*.head_nav ul li{*/
    /*float: left;*/
    /*display: inline-block;*/
    /*text-align: left;*/
/*}*/
.head_nav li:first-child,.head_nav li:nth-child(2),.head_nav li:nth-child(3){
    float: left;
    display: inline-block;
    width: 33.3%;
    text-align: center;
}
.head_nav li:nth-child(4),.head_nav li:nth-child(5){
    float: left;
    display: inline-block;
    width: 50%;
    text-align: center;
}
.head_nav li a{
    font-size: 14px;
    color: #333743;
    font-weight: bolder;
    padding-left: 5px;
    padding-right: 5px;
}
ol, ul{
    margin: 0px;
}
.head_nav li.active a{
    border-bottom: 2px solid red;
}
.head_nav li.current a{
    border-bottom: 2px solid red;
}
.head_bottom{
    width: 100%;
    /*margin-top: 15px;*/
    border-bottom: 2px solid #e62925;
    position: relative;
    overflow: hidden;
}
.span_text{
    display: block;
    width: 100%;
    background: #343843;
    height: 12px;
    border-top: 1px solid #4d4f55;
}
#bottom1{
    /*width: 320px;*/
    /*max-width: 640px;*/
    width: 100%;
    /*height: 110px;*/
    overflow:hidden;
    margin: auto;
}
.head_bottom ul{
    /*width: 100%;*/
    /*height: 92px;*/
    /*overflow: hidden;*/
    /*float: left;*/
}
.head_bottom ul li{
    width: 120px;
    display: inline-block;
    background: #fff;
    text-align: center;
    float: left;
}
.head_bottom ul li a{
    width:100%;
    text-align: center;
    height: 92px;
    line-height: 92px;
}
.head_bottom ul li a img{
    width: 120px;
    height: 90px;
    margin: auto;
    vertical-align: bottom;
}