body {
    background-color: black;
    color: lime;
    font-family: monospace;
    text-align: center;
}
h1 {
    font-size: 2em;
    margin-top: 20px;
}
h2 {
    font-size: 1.5em;
    margin-top: 10px;
}
p {
    font-size: 1.2em;
    margin: 10px 0;
}
a {
    color: cyan;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
button {
    background-color: lime;
    color: black;
    border: none;
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
}
button:hover {
    background-color: darkgreen;
}
footer {
    margin-top: 20px;
    font-size: 0.8em;
    color: gray;
}
@media (prefers-color-scheme: dark) {
    body {
        background-color: black;
        color: lime;
    }
    a {
        color: cyan;
    }
}
@media (prefers-color-scheme: light) {
    body {
        background-color: white;
        color: black;
    }
    a {
        color: blue;
    }
}
@media (max-width: 600px) {
    h1 {
        font-size: 1.5em;
    }
    h2 {
        font-size: 1.2em;
    }
    p {
        font-size: 1em;
    }
    button {
        width: 100%;
        padding: 15px;
    }
}