* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f9;
    color: #333;
    transition: background-color 0.5s ease, color 0.5s ease;
}

.container {
    text-align: center;
}

h1 {
    font-size: 60pt;
    margin-bottom: 20px;
}

.dropdown-container {
    display: flex;
    justify-content: center;
    gap: 15px;
}

select {
    padding: 10px 15px;
    font-size: 16px;
    border: 2px solid #ccc;
    border-radius: 5px;
    outline: none;
    cursor: pointer;
    min-width: 180px;
}

select:disabled {
    background-color: #e0e0e0;
    cursor: not-allowed;
}

.btn-back {
    margin-top: 30px;
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #007bff;
    color: white;
    transition: background 0.3s;
}

.btn-back:hover {
    background-color: #0056b3;
}