body {
    background-color: #333;
    color: #fff;
    font-family: serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #444;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

input[type="date"], select, button {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #555;
    border-radius: 3px;
    background: #555;
    color: white;
}