#concept .title_img {
    width: 60%;
    margin: 0 auto 40px;
}
#concept .main_txt {
    position: relative;
    padding-top: 50px;
}
#concept .main_txt h2 {
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    font-weight: 600;
    margin-bottom: 20px;
}
#concept .main_txt p {
    font-size: 1.0rem;
    letter-spacing: 0.1em;
    line-height: 2.4;
    margin-bottom: 30px;
}
#concept .bg_img {
    position: absolute;
    top: 0;
}
#concept .notes-area {
    margin-top: 0;
}


@media screen and (max-width: 810px) {
    #concept .title_img {
        width: 90%;
    }
    #concept .main_txt h2 {
        font-size: 1.2rem;
    }

}
@media screen and (max-width: 599px) {
    #concept .main_txt p {
        font-size: 0.9rem;
    }
}