fredboniface.co.uk/style/new_menu.css

.menubar {
    background-color: darkslategrey;
    color: azure;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 40px;
}

.menubar_logo img {
    max-width: 13%;
    padding: 5px;
}

.menubar_hamburger {
    position: absolute;
    top: 2px;
    right: 0;
    padding: 5px;
}

.sidebar_open_long {
    display: none;
}

.sidebar_open_short {
    font-size: larger;
    background-color: slategrey;
    color: azure;
    border: none;
    border-radius: 2px;
}

.sidebar {
    position: fixed;
    top: 40px;
    right: 0;
    margin: auto;
    height: 100%;
    max-width: 60%;
    background-color: darkslategrey;
}

.sidebar a {
    padding: 50px;
    align: right;
    width: 100%;
}

.sidebar_social {
    position: absolute;
    bottom: 50px;
}

@media screen and (min-width: 800px) {
    .menubar {
        position: -webkit-sticky;
        position: sticky;
        top: 0px;
    }
}