* {
    background-image: url(../_images/_background.png);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    text-decoration: none;
    margin-right: 80px;
}

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

footer {position: absolute; bottom: 0;
}

@media (max-width: 768px) {
    header {
        margin-right: 5px;
    }
}