#section_1{
    background-image: url(../img/header/2.jpg);
}

#s2_main_title {
    font-size: 27px;
}

#s2_sub_title {
    font-size: 14px;
}

#in_s3{
    width: 75%;
}

#s3_img_box,
#s3_txt_box {
    float: left;
    width: 100%;
    overflow: hidden;
}

#s3_img_box img {
    width: 100%;
}

#s3_txt_box img {
    width: 100%;
}