body {
    box-sizing: border-box;
    max-width: 40em;
    margin: 0 auto;
    padding: 5px;
    font-family: Georgia, serif;
    font-size: 20px;
    line-height: 30px;
    background-color: #fff;
    color: #000;
}

a {
    text-decoration: none;
    color: #007BFF;
    transition: color 0.3s ease;
}

a:hover, a:focus {
    color: #0056b3;
    text-decoration: underline;
}

header {
    background-color: #f0f0f0;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 10px 0 0;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

main {
    padding: 20px;
}

section {
    margin-bottom: 20px;
}

#about .container {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
}

.bio-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}

@media (max-width: 768px) {
    #about .container {
        flex-direction: column;
        text-align: center;
    }

    .bio-photo {
        margin: 0 auto;
    }
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #f0f0f0;
}