body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #fff;
    color: #333;
}
header {
    display: flex;
    align-items: center;
    padding: 10px;
    background: #000;
}
.logo {
    height: 50px;
    margin-right: 20px;
}
nav a {
    margin: 0 10px;
    color: #00f0ff;
    text-decoration: none;
    font-weight: bold;
}
main {
    padding: 20px;
}