.nomal {  font-size: 14px; line-height: 20px;}
.small { font-size: 12px; line-height: 14px;}
.under {  background-image: url(../img/under_back.gif); background-repeat: repeat-x;}
.menu_back {  background-image: url(../img/menu/menu_back.gif); background-repeat: repeat-x;}
.piano_back {  background-image: url(../img/p01/p01_back.jpg); background-repeat: no-repeat; background-color: #FFFFFF; background-position: right center;}