body, html, head {
    background-color: black;
    color: white;
    font-family: "Open Sans", "Helvetica", "Arial", sans-serif;
}

a:link, a:visited {
    text-decoration: none;
    color: skyblue;
}

a:hover {
    text-decoration: underline;
    color: aquamarine;
}

header {
    font-size:large;
    font-weight: bold;
}

footer {
    font-size: smaller;
    color: grey;
}

nav {
    display: block;
    width: 100%;
    background-color: rgb(51, 51, 51);
}

nav a {
    display:inline-block;
    border: 0 3px solid gray;
    margin: 0 2px;
    padding: 5px 1px;
}

.active, .active:link, .active:hover {
    color:rgb(78, 131, 131);
    font-weight: bold;
    text-decoration: none;
}