html {
    background-color: #111;
    font-family: "Yanone Kaffeesatz", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #ffffff;
}

h1 {
    text-align: center;
}

nav {
    margin-left: auto;
    margin-right: auto;
    width: 1200px;
    text-align: center;
}

nav ul {
    list-style: none;
}

nav li {
    display: inline;
}

a:link {
    color: #ffffff;
}

a:visited {
    color: #ffffff;
}

a:hover {
    color: #ffffff;
}


a:active {
    color: #ffffff;
}

#logo {
    text-align: center;
}

section {
    margin-left: auto;
    margin-right: auto;
    width: 1200px;
    padding-top: 20px;
    padding-bottom: 20px;
}

section>img {
    text-align: center;
}

footer {
    text-align: center;
}