* {
  margin: 0;
  padding: 0;
}
/* 清除列表的黑点 */
ul li {
  list-style-type: none;
}
/* 清除a链接的默认下划线 */
a {
  text-decoration: none;
}
body{
  font-size:16px;
}
.index-body {
  background-image: url('/public/images/bg.jpg');
  background-repeat: no-repeat;
  background-position: center top;
  width:100%;
}

.header {
  height:90px;
  background-color: #FFFFFF;
  /*background: rgba(255,255,255,0.7); opacity: 0.7; */
  position: sticky;
  top: 0;
}

.nav_main {
  width:700px;
  height: 90px;
  float:left;list-style:none;margin:0px;padding:0px;
  position:relative;/* 这个属性要有，否则子无素的z-index不起作用 */
}
.nav_main>li {
  float: left;
  width: 100px;
  height: 90px;
  line-height: 90px;
}
.nav_main a {
  display: block;/* 将a转为块级元素 */
  height: 90px;
  font-size:20px;
  color: black;
  text-align: center;
  border: 0px solid #bbb;
  box-sizing: border-box;
}
.nav_main_sub {
  display: none;/* 隐藏元素 */
  background-color: #FFFFFF;
  border-top:1px solid #E9E9E9;
  border-bottom:1px solid #E9E9E9;
  z-index:10;
  top:0px;
  float:left;list-style:none;margin:0px;padding:0px;
  width: 100px;
}
.nav_main_sub>li {
  height:40px;
  line-height:40px;
  border-left:1px solid #E9E9E9;
  border-right:1px solid #E9E9E9;
  font-size:16px;
}
.nav_main_sub a {
  display: block;
  height: 40px;
  font-size:16px;
  color: black;
  text-align: center;
  border: 0px solid #bbb;
  box-sizing: border-box;
}
/* 当鼠标滑过li的时候 让元素显示 */
.nav_main li:hover .nav_main_sub{
  display: block;
}

.nav_main_sub a:hover{
  background-color: #a2534c;
  color: #fff;
}

.nav_right {
  width: 300px;
  height: 90px;
  position:relative;/* 这个属性要有，否则子无素的z-index不起作用 */
  float:left;list-style:none;margin:0px;padding:0px;
}

.nav_right>li {
  float: left;
  height: 90px;
  line-height: 90px;
}

.nav_right a {
  display: block;/* 将a转为块级元素 */
  height: 90px;
  font-size:18px;
  color: black;
  text-align: center;
  border: 0px solid #bbb;
  box-sizing: border-box;
}
.nav_right_sub {
  display: none;/* 隐藏元素 */
  background-color: #FFFFFF;
  border-top:1px solid #E9E9E9;
  border-bottom:1px solid #E9E9E9;
  z-index:10;
  top:0px;
  float:left;list-style:none;margin:0px;padding:0px;
  width:90px;
}
.nav_right_sub>li {
  height:40px;
  line-height: 40px;
  font-size:16px;
  border-left:1px solid #E9E9E9;
  border-right:1px solid #E9E9E9;
}
.nav_right_sub a {
  display: block;
  height: 40px;
  font-size:16px;
  color: black;
  text-align: center;
  border: 0px solid #bbb;
  box-sizing: border-box;
}
/* 当鼠标滑过li的时候 让元素显示 */
.nav_right li:hover .nav_right_sub{
  display: block;
}
.nav_right_sub a:hover{
  background-color: #a2534c;
  color: #fff;
}


/* 下面是内页 */
.inner-header {
  width:100%;
  height:90px;
  background-color: #FFFFFF;
  position: sticky;
  position:absolute;/* 这个属性要有，否则子无素的z-index不起作用 */
  z-index:10;
}

.listb{
  height:50px;line-height:50px;background-color:#F7F7F7;cursor:pointer;font-size:18px;padding-left:15px;
}
.listb:hover{
  background-color:#a2534c;
  color:#FFFFFF;
}

#ul_face{
  float:left;width:100%;list-style:none;padding:0px;margin:0px;
}
#ul_face li{
  width:51px;height:45px;list-style-type:none;padding:0px;margin:0px;float:left;text-align:center;
}