.OS_content {}

.OS_content .OS_msg {
    padding-top: 40px;
    color: #a7a7a7;
    font-size: 14px;
}

.OS_content .OS_title {
    padding-top: 50px;
    text-align: center;
}

.OS_content .OS_title .OS_txt {
    font-size: 35px;
    color: #cbcbcb;
}

.OS_content .OS_title .OS_p {
    font-size: 20px;
    color: rgb(100, 100, 100);
    font-family: 黑体;
    padding: 20px 0px 42px;
}

.OS_column {
    display: inline-block;
    padding-bottom: 47px
}

.OS_column ul li {
    height: 35px;
    line-height: 35px;
    font-size: 14px;
    float: left;
    padding: 0px 30px;
    border: 1px solid #dadada;
    border-radius: 30px;
    margin: 0px 25px;
    cursor: pointer;
}

.OS_column ul li:hover {
    background: #004b47;
    color: #ffffff;
}

.OS_whole {
    padding: 58px 48px 0 48px;
}

.OS_whole_one {
    width: 1110px;
    height: 210px;
    padding-bottom: 20px;
}

.OS_whole_one:nth-child(3) {
    padding-bottom: 100px;
}

.OS_whole_one .OS_left {
    float: left;
    width: 540px;
    height: 210px;
    background: #f2f2f2;
}

.OS_whole_one .OS_left .OS_ico {
    width: 224px;
    height: 210px;
    float: left;
    position: relative;
}

.OS_whole_one .OS_left .OS_ico .OS_i {
    width: 50px;
    height: 50px;
    background-color: #7a7a7a;
    -webkit-border-radius: 50%;
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.OS_whole_one .OS_left:hover .OS_i {
    background-color: #61ba01;
}

.OS_whole_one .OS_left .OS_ico .OS_i img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.OS_whole_one .OS_left .OS_img {
    width: 316px;
    height: 210px;
    float: left;
}

.OS_whole_one .OS_right {
    float: right;
    width: 540px;
    height: 210px;
    background: #f2f2f2;
}

.OS_whole_one .OS_right .OS_ico {
    width: 224px;
    height: 210px;
    float: left;
    position: relative;
}

.OS_whole_one .OS_right .OS_ico .OS_i {
    display: block;
    width: 50px;
    height: 50px;
    background-color: #7a7a7a;
    -webkit-border-radius: 50%;
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.OS_whole_one .OS_right:hover .OS_i {
    background-color: #61ba01;
}

.OS_whole_one .OS_right .OS_ico .OS_i img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.OS_whole_one .OS_right .OS_img {
    width: 316px;
    height: 210px;
    float: left;
}

.OS_pp {
    font-size: 14px;
    color: #7a7a7a;
    text-align: center;
    padding-top: 120px;
}