h1{margin-top:8px}
.hidden{display:none}

#reserve button[type="submit"]{
    margin-top: 15px;
    padding: 8px 20px;
    font-size: 1.4rem;
    min-width: 210px;
}

#reserve select,
#reserve input[type="date"] {
    min-width: 210px;
}