html{
    scroll-behavior: smooth;
}

#s2_title_wrap{
    width: 330px;
    display: block;
}

#section_3{
    margin-bottom: 130px;
}

#in_s3{
    border-bottom: 1px solid #cccccc;
    box-sizing: border-box;
}

#left_b{
    float:left;
    width: 21%;
    overflow: hidden;
    margin-right: 7%;
    font-size: 27px;
    font-weight: 700;
    border-right: 1px solid #000000;
    box-sizing: border-box;
    line-height: 27px;
}

#right_b{
    float:left;
    width: 72%;
    overflow: hidden;
}

#box_txt{
    float: left;
    width: 100%;
    overflow: hidden;
    font-size: 18px;
    font-weight: 400;
    color: #585858;
}

#box_ul{
    float: left;
    width: 100%;
    overflow: hidden;
    margin-top: 48px;
    padding-bottom: 70px;
}

#box_ul li{
    float: left;
    width: 100%;
    height: auto;
    margin-bottom: 35px;
}

#box_ul li img{
    width: 30px;
}

.in_txt{
    float: left;
    display: inline-block;
    overflow: hidden;
    font-size: 20px;
    font-weight: 400;
    color: #454545;
    margin-left: 1.5%;
}

.in_text{
    float: left;
    width: 100%;
    overflow: hidden;
    font-size: 16px;
    font-weight: 400;
    color: #585858;
    margin:10px 0 0 4%;
}

.s4_box{
    float: left;
    width: 33%;
    overflow: hidden;
    border-right: 1px solid #cccccc;
    box-sizing: border-box;
    margin-bottom: 90px;
}

.s4_box:last-child{
    border: 0;
}

.s4_img{
    margin: 0 auto;
    width: 50px;
    overflow: hidden;
}

.s4_txt{
    float: left;
    width: 100%;
    overflow: hidden;
    text-align: center;
    font-size: 14px;
    font-weight: 400;
    color: #222222;
    margin-top: 10px;
}

#bottom_box{
    float: left;
    width: 100%;
    overflow: hidden;
    background-color: #f6f6f6;
    margin-bottom: 100px;
}

.bottom_txt{
    margin: 0 auto;
    width: 95%;
    overflow: hidden;
    padding: 40px;
}

.bottom_text{
    float: left;
    width: 100%;
    overflow: hidden;
    font-size: 16px;
    font-weight: 400;
    color: #222222;
}

strong{
    font-size: 14px;
    margin-right: 7px;
}

@media all and (max-width:1600px){
    #left_b{
        width: 23%;
    }
    #right_b{
    width: 70%;
}
    
}
@media all and (max-width:1366px){
    #left_b{
        font-size: 25px;
    }
}