.fcs-registration-amount-box {
    margin: 20px 0;
    padding: 18px;
    border: 1px solid #d6d6d6;
    border-radius: 8px;
    background: #fafafa;
}

.fcs-registration-amount-label {
    display: block;
    margin-bottom: 8px;
    font-size: 18px;
    font-weight: 700;
}

.fcs-registration-amount-description {
    margin: 0 0 12px;
    line-height: 1.5;
}

.fcs-registration-amount-input {
    width: 100%;
    max-width: 300px;
    padding: 10px;
    font-size: 17px;
}

.fcs-registration-amount-message {
    margin-top: 10px;
    font-weight: 600;
}