@media screen and (min-width : 641px) and (max-width : 1024px) {
#tmp_contents .idx_menu {
    margin: 0;
}
#tmp_contents .idx_menu li {
    padding: 0;
}
#tmp_contents .idx_menu > li:nth-child(2n) {
    padding-left: 20px;
}
#tmp_contents .idx_menu > li:nth-child(2n+1) {
    padding-right: 20px;
}
}