body {
    background-color: #0b0b0b;
    color: #e0e0e0;
    font-family: monospace;
    margin: 0;
}
header {
    background-color: #111;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    height: 40px;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
main {
    padding: 20px;
}