/* section帯背景色 */
.band_lightgreen::before {
    background:#E3E8C9;
    z-index: -1;
}
.band_lightred::before {
    background:#E5DFDC;
    z-index: -1;
}
.band_lightgray::before {
    background:#F2EFEE;
    z-index: -1;
}
/* section帯 */
.band_left::before {
    content: '';
    position: absolute;
    width:50%;
    height:200px;
    left:0;
}
.band_right::before {
    content: '';
    position: absolute;
    width:50%;
    height:200px;
    right:0;
}
.band_whole::before {
    content: '';
    position: absolute;
    width:100%;
    height:200px;
    left:0;
}

/* 文字色 */
.na-text-gray {
    color:#808080;
}
.na-text-deepgray {
    color:#777;
}