body {
    font-family: 'Helvetica', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #eee;
    color: #333;
}

body, html {
    margin-top: 20px;
    margin-bottom: 50px;
}

.container {
    width: 80%;
    margin: 0 auto;
}

#images {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 20px;
    justify-items: center;
    margin-top: 100px;
    margin-bottom: 100px;

    @media (max-width: 768px) {
        grid-template-columns: repeat(2, 1fr);
    }

    @media (max-width: 500px) {
        grid-template-columns: 1fr;
    }
}

h1, h2 {
    color: #333;
    text-align: center;
}

main {
    padding: 20px 0;
}

img {
    max-width: 75%;
    height: auto;
    padding: 15px;
    border: 10px solid #333;
    box-shadow: 4px 4px 4px #333;
}

ul, ol {
    width: 40%;
    margin: 0 auto;
}

li {
    padding: 10px;
    line-height: 2;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    text-align: center;
}

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

a:hover {
    text-decoration: underline;
}

/* Responsive Styles */
@media only screen and (max-width: 768px) {
    .container {
        width: 90%;
    }
}