.background_image_photo {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-size: 100%;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 1.5s ease-in-out;
}

/* 各背景画像用のクラスを定義 */
.bg-image-1_sp {
    background-image: url('../images/background1_sp.png') !important;
}
.bg-image-2_sp {
    background-image: url('../images/background2_sp.png') !important;
}
.bg-image-3_sp {
    background-image: url('../images/background3_sp.png') !important;
}
.bg-image-4_sp {
    background-image: url('../images/background4_sp.png') !important;
}
.bg-image-5_sp {
    background-image: url('../images/background5_sp.png') !important;
}
.bg-image-6_sp {
    background-image: url('../images/background6_sp.png') !important;
}
.bg-image-7_sp {
    background-image: url('../images/background7_sp.png') !important;
}
.bg-image-8_sp {
    background-image: url('../images/background8_sp.png') !important;
}
.bg-image-9_sp {
    background-image: url('../images/background9_sp.png') !important;
}
.bg-image-10_sp {
    background-image: url('../images/background10_sp.png') !important;
}



    .bg-image-1_tb {
        background-image: url('../images/background1_tb.png') !important;
    }
    .bg-image-2_tb {
        background-image: url('../images/background2_tb.png') !important;
    }
    .bg-image-3_tb {
        background-image: url('../images/background3_tb.png') !important;
    }
    .bg-image-4_tb {
        background-image: url('../images/background4_tb.png') !important;
    }
    .bg-image-5_tb {
        background-image: url('../images/background5_tb.png') !important;
    }
    .bg-image-6_tb {
        background-image: url('../images/background6_tb.png') !important;
    }
    .bg-image-7_tb {
        background-image: url('../images/background7_tb.png') !important;
    }
    .bg-image-8_tb {
        background-image: url('../images/background8_tb.png') !important;
    }
    .bg-image-9_tb {
        background-image: url('../images/background9_tb.png') !important;
    }
    .bg-image-10_tb {
        background-image: url('../images/background10_tb.png') !important;
    }


    .bg-image-1_pc {
        background-image: url('../images/background1.png') !important;
    }
    .bg-image-2_pc {
        background-image: url('../images/background2.png') !important;
    }
    .bg-image-3_pc {
        background-image: url('../images/background3.png') !important;
    }
    .bg-image-4_pc {
        background-image: url('../images/background4.png') !important;
    }
    .bg-image-5_pc {
        background-image: url('../images/background5.png') !important;
    }
    .bg-image-6_pc {
        background-image: url('../images/background6.png') !important;
    }
    .bg-image-7_pc {
        background-image: url('../images/background7.png') !important;
    }
    .bg-image-8_pc {
        background-image: url('../images/background8.png') !important;
    }
    .bg-image-9_pc {
        background-image: url('../images/background9.png') !important;
    }
    .bg-image-10_pc {
        background-image: url('../images/background10.png') !important;
    }















    .background_image_photo {
        width: 100%;
        height: 100%;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 2;
    }