#reservation_area2 ul{
    align-items: stretch;
    gap: 2%;
}
#reservation_area2 ul li a.lineBtn{
    height: 100%;
    display: block;
    line-height: 2.3;
}
@media (max-width: 640px) {
    #reservation_area2 ul li a.lineBtn{
        line-height: 2.6;
    }
}
#reservation_area2 ul li a.lineBtn::after{
    display: none;
}