*{
  margin:0;
  padding:0;
  }

.topic{
  display:flex;
  height:20px;  
  align-items:center;/*垂直居中*/
  background-color:#003366;/*背景颜色*/
  padding:20px;/*内边距*/
  }

.logoimg{  float:left;  margin-right:100px;/*可以调整这个值来增加图片和文字之间的距离*/  }
.searchimg{  position: absolute; /* 设置为绝对定位 */
             right: 0; /* 右边对齐容器 */
             top: 10; /* 顶部对齐容器 */ }

.toptext{  overflow:hidden;/*清除浮动*/  }

h2{color:#ffffff;  }

body,html{
  width:100%;
  height:100%;
  font-size:14px;
  font-family:'MicrosoftYahei','微软雅黑','Simsun','宋体','Arial',sans-serif;
  }


a{  color:#FFF;  text-decoration:none;  outline:none;  }

ol,ul,li{  list-style:none;  }

.head-nav{  width:100%;  height:60px;  background:#007130;  }
.head-nav-con{  width:100%; height:60px;  margin:auto;  }
.head-nav-con ul li{  width:170px;  float:left;  font-size:20px;  text-align:center;  }
.head-nav-con ul li:hover{  background:#ff9c01;  }
.head-nav-con ul a{  display:block;  text-decoration:none;  text-align:center;  line-height:60px;  color:#F5F5F5;  }

.head-nav-con .drop-down{  position:relative;  }
.head-nav-con .drop-down-content{  padding:0;  display:none;  position:absolute;  z-index:1;  background:#007130;  }
.head-nav-con .drop-down-content li:hover>a{  background-color:#ff9c01;  }
.head-nav-con .drop-down:hover .drop-down-content{  display:block;  }

.head-nav-con .drop-down-2{  position:relative;  }
.head-nav-con .drop-down-content-2{  padding:0;  display:none;  position:absolute;  z-index:1;  background-color:#007130;  right:-170px;  top:0;  }

.head-nav-con .drop-down-content-2>li{  float:none;  background-color:#007130;  }
.head-nav-con .drop-down-content-2 li:hovera{  background-color:#ff9c01;  }
.head-nav-con .drop-down-2:hover .drop-down-content-2{  display:block;  }

/*使iframe充满整个视窗*/
.iframe-container {
    margin-left: 0px;   
    background-color: #FFF;

    }

/*iframe本身的样式*/
#eiframe{
  border:none;/*移除边框*/
  width:100%;/*使iframe宽度充满容器*/
  height:800px;/*iframe高度*/
  }

/*底部导航*/
#Footer{width:100%;line-height:29px;text-align:center;color:#ccc;margin:0 auto;padding:18px 0;background-color:#666666;}
#Bottomnav{width:65%;text-align:center;float:right;}
#Bottomnav ul{list-style:none;margin: 0px;padding: 0px; width: auto;}
#Bottomnav ul li{ float:left; }
#Bottomnav ul li a, #Bottomnav ul li a:visited{background-color: #666666; border: 1px #666666 solid; color: #dde4ec;display:inline; line-height:20px;padding: 4px 20px;text-decoration: none;white-space: nowrap; }
#Bottomnav ul li a:hover{background-color: #bfcbd6;color: #465c71;text-decoration: none; }
#Bottomnav ul li a:active{background-color: #465c71;color: #cfdbe6;text-decoration: none;}
/*版权*/
#copyright{clear:both;text-align:center;}
#copyright a:visited{background-color: #666666; border: 1px #666666 solid; color: #dde4ec;display:inline; line-height:20px;padding: 4px 20px;text-decoration: none;white-space: nowrap; }
#copyright a:hover{background-color: #bfcbd6;color: #465c71;text-decoration: none; }
#copyright a:active{background-color: #465c71;color: #cfdbe6;text-decoration: none;}


    /* 回到顶部 */
    .backTop {
      /* 固定定位 */
      position: fixed;
      bottom: 100px;
      right: 0;
      margin-right: 20px;
      z-index: 999;
      /* 回到顶部样式 */
      width: 35px;
      height: 35px;
      background-color: deepskyblue;
      /* 字体在元素中水平垂直居中 */
      line-height: 35px;
      text-align: center;
      font-size: 14px;
      color: white;
      /* 设置圆角 */
      border-radius: 50%;
      /* 设置过渡效果 */
      transition: all linear 0.5s;
      cursor: pointer;
      /* 隐藏 透明度为0 */
      opacity: 0;
    }