h1 {
text-align: center;
}

nav {
display: flex;
justify-content: center;
align-items: center;
}

footer {
    text-align: center;
}

body {
background-color: #e0e0e0;
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
color: #000000;
margin: 10px;
}