/** 关于 */
/* .banner.about{background: url(../img/nav_img4.jpg) no-repeat center top; background-size: cover;} */
.solution-about{padding-bottom: 130px;}
.solution-about ul.aboutab{padding: 100px 0; text-align: center;}
.solution-about ul.aboutab li{display: inline-block; padding: 0 22px; margin-left: 15px; font-size: 20px; line-height: 46px; color: #b5b5b5; border: 1px solid #e2e2e2; border-radius: 3px; cursor: pointer;}
.solution-about ul.aboutab li:first-child{margin-left: 0;}
.solution-about ul.aboutab li.layui-this
,.solution-about ul.aboutab li:hover{color: #2ab5a3; border-color: #afddd7; transition: 0.3s;}

.layui-container{position:relative;margin:0 auto;padding:0 15px;box-sizing:border-box}
.layui-row:after,.layui-row:before{content:'';display:block;clear:both}
/* .layui-this:after,.layui-textarea{border-color:#e6e6e6} */

.show_tag {
    display: block;
}

.hide_tag {
    display: none;
}

.content p {
    font-size: 20px;
    margin-left: 100px;
    margin-right: 100px;
    text-indent: 2em;
}


/* 数据网关 */
.server_title {
    line-height: 300px;
    font-size: 30px;
    color: white;
    text-align: center;
}

.gateway_server {
    width: 1340px;
    margin: 0 auto;
}

.gateway_img {
    float: left;
    margin: 0px 100px;
    width: 340px;
}

.server_feature {
    float: left;
}

.feature_title {
    font-size: 28px;
    font-weight: 700;
    margin-top: 30px;
}

.server_feature ul li {
    list-style-type: disc;
    font-size: 20px;
    width: 800px;
}

/* 建筑设备 */
.build_server {
    margin-top: 100px;
    margin-left: 120px;
}

.build_class {
    float: left;
    width: 200px;
    height: 500px;
    background-color: #dad7d7;
    padding-top: 20px;
}

.build_class ul li {
    line-height: 50px;
    text-align: center;
}

.build_class ul li a {
    font-size: 20px;
}

.build_class ul li.integrated_select {
    background-color: #fff;
}

.build_class ul li:hover {
    line-height: 50px;
    text-align: center;
    background-color: #fff;
}

.build_feature {
    float: left;
}

.analog_output img {
    margin-top: 30px;
}