body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

h1 {
    text-align: center;
    color: #333;
}

ul {
    list-style-type: none;
    padding: 0;
    text-align: center;
}

li {
    margin: 10px 0;
}

a {
    text-decoration: none;
    color: #007BFF;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

#picture-container {
    text-align: center;
    margin: 20px 0;
}

#picture {
    max-width: 100%;
    height: auto;
}

form {
    text-align: center;
    margin-top: 20px;
}

label {
    font-size: 16px;
}

input[type="number"] {
    width: 50px;
    text-align: center;
    margin: 10px;
}

button {
    background-color: #007BFF;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #0056b3;
}