[hidden] { display: none !important; }
button:disabled { cursor: not-allowed; opacity: .55; }
.checkout-box { max-width: 44rem; padding: 1.5rem; border: 1px solid var(--rule); margin-block: 1.5rem; border-radius: .75rem; }
.checkout-box label { display: block; margin-bottom: .5rem; font-weight: 650; }
.checkout-box input, .checkout-box select { display: block; width: 100%; min-height: 3rem; padding: .65rem; margin-bottom: 1rem; font: inherit; border: 1px solid currentColor; border-radius: .35rem; background: var(--paper); color: var(--ink); }
.checkout-box input[readonly] { font-family: ui-monospace, monospace; font-size: .85rem; }
.checkout-box .btn { margin: .25rem .5rem .25rem 0; }
.checkout-box p { overflow-wrap: anywhere; }