.hero-area {
    background-image: image-set(url(../img/hero-bg_sp2x.jpg) 1x,
            url(../img/hero-bg_sp3x.jpg) 3x,
            url(../img/hero-bg_sp4x.jpg) 4x);
}

.exam-area {
    .exam-woman-img {
        background-image: image-set(url(../img/exam-woman_sp2x_tb1x_pc1x.png) 1x,
                url(../img/exam-woman_sp3x_tb2x.png) 3x,
                url(../img/exam-woman_sp4x_pc2x.png) 4x);
    }
}

.worry-area {
    .worry-man-img {
        background-image: image-set(url(../img/worryman_sp2x_tb1x_pc1x.png) 1x,
                url(../img/worryman_sp3x_tb2x.png) 3x,
                url(../img/worryman_sp4x_pc2x.png) 4x);
    }
}

.loan-area {
    .master-img {
        background-image: image-set(url(../img/up-master_sp2x_tb1x_pc1x.png) 1x,
                url(../img/up-master_sp3x_tb2x.png) 3x,
                url(../img/up-master_sp4x_pc2x.png) 4x);
    }
}

.plan-area {
    .tant-img {
        background-image: image-set(url(../img/tant-img_sp2x_tb1x_pc1x.jpg) 1x,
                url(../img/tant-img_sp3x.jpg) 3x,
                url(../img/tant-img_sp4x_pc2x.jpg) 4x);
    }
}

.comment-area {
    .comment1-img {
        background-image: image-set(url(../img/blue-man_sp2x.png) 1x,
                url(../img/blue-man_sp3x.png) 3x,
                url(../img/blue-man_sp4x.png) 4x);
    }

    .comment2-img {
        background-image: image-set(url(../img/pink-woman_sp2x.png) 1x,
                url(../img/pink-woman_sp3x.png) 3x,
                url(../img/pink-woman_sp4x.png) 4x);
    }

    .comment3-img {
        background-image: image-set(url(../img/green-man_sp2x.png) 1x,
                url(../img/green-man_sp3x.png) 3x,
                url(../img/green-man_sp4x.png) 4x);
    }
}

.intro-area {
    .master-img {
        background-image: image-set(url(../img/intro-master_sp2x.png) 1x,
                url(../img/intro-master_sp3x.png) 3x,
                url(../img/intro-master_sp4x.png) 4x);
    }
}

.lineadd-area {
    background-image: image-set(
            url(../img/lineadd-bg_sp2x_tb1x.png) 1x,
            url(../img/lineadd-bg_sp3x_tb2x.png) 3x,
            url(../img/lineadd-bg_sp4x_pc2x.png) 4x);
}