.grade_green {  background-image: url(img/grade_green.jpg); background-repeat: repeat-y; background-position: left top}
.grade_top {  background-attachment: fixed; background-image: url(img/grade_top.jpg); background-repeat: repeat-x; background-position: left top}
.grade_syokuji {  background-image: url(syokujicare/img/rite_grade.jpg); background-repeat: repeat-y; background-position: left top}