body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.main-content {
    flex: 1;
}
select, input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: white;
}
select:disabled, input:disabled {
    background-color: #f3f4f6;
    cursor: not-allowed;
}
.disabled-field {
    background-color: #f3f4f6;
    cursor: not-allowed;
    opacity: 0.7;
}