.clearfix, .container:after,
.row:after, ul {
  *zoom: 1;
}
.clearfix {
    *zoom: 1;
}

.clearfix:after {
    content: " ";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}
body,
button,
input,
select,
textarea {
  font: 14px/1.5 "\5FAE\8F6F\96C5\9ED1", "arial";
  color: #5a5a5a;
}

body {
  max-width: 2560px;
  margin: 0 auto;
}

img {
  max-width: 100%;
  display: block;
}
a {
    outline: 0!important;
}
.cidbtn {
    height: 40px;
    background: #000;
    padding: 0 10%;
}
.pos_ab {
    width: 120px;
    padding-top: 6px;
    position: relative;
    float: right;
}
.btn_cid {
    width: 120px;
    height: 26px;
    background: #fff;
    padding: 0 5px;
    position: relative;
    border: 1px solid #dadada;
    cursor: pointer;
}
.btn_cid b {
    float: left;
    margin-right: 5px;
    height: 26px;
    display: block;
}
.btn_cid img {
    height: 16px;
    margin-top: 5px;
    display: inline-block;
}
.btn_cid span {
    float: left;
    font-size: 14px;
    color: #333;
    line-height: 26px;
    padding-right: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    width: calc(100% - 41px);
}
.btn_cid i {
    display: block;
    width: 0;
    height: 0;
    border: 4px solid;
    position: absolute;
    top: 50%;
    right: 3px;
    border-color: #111 transparent transparent transparent;
    border-bottom-width: 0;
    background: none;
    margin: -2px 0 0;
    padding: 0;
    transition: .5s;
}
.btn_cid.on i {
    -moz-transform: rotate(-180deg);
    -webkit-transform: rotate(-180deg);
    -ms-transform: rotate(-180deg);
    -o-transform: rotate(-180deg);
    transform: rotate(-180deg);
    top: 12px;
    transition: .5s;
}
.language_list {
    padding: 5px;
    width: 120px;
    position: absolute;
    left: 0;
    top: 33px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, .1);
    display: none;
    background: #FFF;
    border: 1px solid #eee;
    padding-bottom: 0;
    z-index: 9999;
}
.language_list ul {
    margin: 0;
    padding: 0;
}
.language_list li {
    position: relative;
    list-style: none;
    border-bottom: 1px solid #dadada;
    padding: 7px 0;
    line-height: 16px;
    width: 100%;
    float: left;
}
.language_list li a{
    display: block;
}
.language_list li b {
    position: relative;
    display: inline-block;
    vertical-align: top;
    width: 26px;
    height: 16px;
    margin-right: 5px;
    color: #fff;
    float: left;
}
.language_list li b img {
    height: 16px;
}
.language_list span {
    position: relative;
    display: inline-block;
    vertical-align: top;
    color: #333;
    font-size: 14px;
    float: left;
    width: calc(100% - 35px);
}
.language_list li:hover span {
    color: red;
}
#iframe {
    height: calc(100vh - 45px);
    position: relative;
    overflow: hidden;
}