#navicon
{
    display: none;
}

@media screen and (max-width: 768px)
{
    #navicon
    {
        display: block;
        width: 40px;
        height: 40px;
        margin: 0 auto 10px;
        padding: 6px;
        box-sizing: border-box;
        line-height: 0;
        background-color: rgba(255, 255, 255, 0.8);
        border: 1px solid #999;
        border-radius: 4px;
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25);
    }

    #navicon img
    {
        display: block;
        width: 100%;
    }

    nav>ul
    {
        display: none;
    }

    #navicon:hover+ul,
    nav>ul:hover,
    nav.menu-open>ul
    {
        display: block;
    }

    nav.menu-closed>ul
    {
        display: none !important;
    }
}