.yeguo-header-langchange {
    position: relative;
}

.yeguo-header-langchange em {
    position: relative;
    top: -3px;
    left: 2px;
    width: 13px;
    height: 7px;
    display: inline-block;
    background: url(/static/images/up.png) no-repeat center;
}

.yeguo-header-langchange.open em {
    background: url(/static/images/down.png) no-repeat center;
}

.yeguo-header-langchange.open .lang-btn {
    display: block;
}

.lang-btn>a {
    display: block;
    position: relative;
}

.lang-btn {
    display: none;
    width: 120px;
    height: 100px;
    position: absolute;
    left: -30px;
    top: 100%;
    border: none;
    z-index: 1000;
}

.lang-btn p {
    width: 100%;
    height: 35px;
    line-height: 35px;
    background-color: #fff;
    text-align: center;
}

.lang-btn p:hover {
    background-color: #EEEEEE;
}

.lang-btn p a {
    color: #000;
    display: block;
}

.box-box {
    position: relative;
    overflow: hidden;
  }
  .box-box img {
    position: relative;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
  }