.box-image--message-cnt01 {
    background-image:url('/saiyou/common/images/message01.jpg');
}

.box-image--message-cnt02 {
    background-image:url('/saiyou/common/images/message02.jpg');
}

.box-image--message-cnt03 {
    background-image:url('/saiyou/common/images/message03.jpg');
}