.pht-cash-button {
    width: 100%;
    display: block;
    padding: 2vh;
    background: #ddd;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.pht-cash-box h4{
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
}

.pht-cash-amount {
    display: block;
    width: 100%;
    font-size: 2em;
    font-weight: bold;
    text-align: right;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0;
    background: #efefef;
}

.pht-cash-input {
    display: block;
    width: 100%;
    font-size: 1em;
    font-weight: bold;
    text-align: right;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 1vh 0;
    background: #efefef;
}

.cash-keyboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
    margin-top: 10px;
}
.cash-keyboard button {
    padding: 1vh;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #efefef;
}

.cash-keyboard div {
    display: flex;
    gap: 5px;
}

.cash-keyboard div button {
    flex: 1;
}

.pht-cash-given {
    display: flex;
    gap: 5px;
}

.pht-cash-given input {
    flex: 10;
}
.pht-cash-given button {
    flex: 1;
}

.pht-cash-sums {
    display: flex;
    gap: 20px;
    justify-content: space-between;
}
.pht-cash-sums .pht-cash-box{
    flex: 1;
}

#pht-change.invalid {
    border-color: red;
    background: #ffe6e6;
}

#pht-cash-submit {
    margin-top: 2vh;;
    display: block;
    width: 100%;
    padding: 1.5vh;
    font-size: 200%;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
}
#pht-cash-submit.disabled {
    background: #efefef;
}