body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
    text-align: center;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

form {
    max-width: 400px;
    margin: 0 auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

label {
    display: block;
    margin-bottom: 10px;
    color: #333;
}

input[type="date"] {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    background-color: #3498db;
    color: #fff;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #2980b9;
}

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

#result p {
    color: #333;
    margin: 0;
}

.success {
    background-color: #2ecc71;
    color: #fff;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.error {
    background-color: #e74c3c;
    color: #fff;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
}