body {
    margin: 0;
    background-color: #2B2B2B;
    color: #e0e0e0;
    font-family: 'Segoe UI', sans-serif;
    text-align: center;
}
header, nav, footer {
    background-color: #1a1a1a;
    padding: 1em;
    text-align: center;
}
nav a {
    color: #e0e0e0;
    margin: 0 15px;
    text-decoration: none;
    text-align: center;
}
nav a:hover {
    color: red;
    text-align: center;
}
h1, h2 {
    color: red;
    text-align: center; 
}
section {
    padding: 2em;
    text-align: center;
}