/* ----------------------
2015/02/10
Nikon -ViewNX-i Help
Kasai Sayaka
---------------------- */

/* ******************* Mobile First ******************* */
/* ******************* For Tablet ******************* */
@media only screen and (min-width: 640px) {
    #bd_index .menu > li.reference a{
        min-height:20em;
    }
}
/* ******************* For PC ******************* */
@media only screen and (min-width: 980px) {
    #bd_index .menu > li.reference a{
        min-height:15em;
    }
}