#navi td {
width: 20%;
}

#navi td a {
display: block;
height: 77.5px;
width: 192px;
max-width: 243px;
margin: 0 auto;
}

#navi td #index_1 {
background-image: url(img/select_model/002-001_impact_button_01.png);
}

#navi td #index_2 {
background-image: url(img/select_model/002-002_mince_button_01.png);
}

#navi td #index_3 {
background-image: url(img/select_model/002-003_oily_button_01.png);
}

#navi td #index_4 {
background-image: url(img/select_model/002-004_suction_button_01.png);
}

#navi td #index_5 {
background-image: url(img/select_model/002-005_vibe_button_01.png);
}

#navi td a:hover {
background-position: 0 -77.5px;
}

#navi td a span {
display: none;
}