body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    color: #333;
}

h1 {
    color: #000;
    margin-bottom: 20px;
}

#calendar {
    width: 80%;
    max-width: 800px;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.1);
    border-collapse: collapse;
}

#calendar tr {
    border-bottom: 1px solid #ddd;
}

#calendar td {
    padding: 10px;
}

#calendar a {
    color: #007BFF;
    text-decoration: none;
}

#calendar a:hover {
    color: #0056b3;
}

@media (max-width: 600px) {
    #calendar {
        width: 90%;
    }
}