* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #333;
}

section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

button {
    padding: 10px 20px;
    margin-bottom: 20px;
    border: none;
    background-color: #28a745;
    color: white;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #218838;
}

#interactive-box {
    width: 200px;
    height: 200px;
    background-color: #007bff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

#interactive-box:hover {
    background-color: #0056b3;
}

footer {
    position: absolute;
    bottom: 10px;
    font-size: 14px;
}