body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
/*
    align-items: center;
*/
    height: 100vh;

    margin: 0;
}

.container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.hidden {
    display: none;
}

label {
    display: block;
    margin-top: 10px;
}

select {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
}

h1 {
    margin-top: 0;
}

h2 {
    margin-top: 20px;
}