flow-web/static/css/header.css

/* luflow.net web site */
/* Public domain 2025. All rights waived */

header {
    position: sticky;
    transition: transform 0.25s ease-in-out;
    top: 0;
    width: 100%;
    min-height: 66px;
    background: #333;
    border-color: #1a1a1a;
    border-style: none none solid none;
    border-width: thin;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9em;
    z-index: 1000;
}

.nav-up {
    transform: translateY(-100px);
}

.nav-down {
    transform: translateY(0px);
}

.branding:link,
.branding:active,
.branding:focus,
.branding:hover,
.branding:visited {
    background-image: url('../img/branding.png');
    background-repeat: no-repeat;
    border-style: none;
    display: inline-block;
    height: 55px;
    width: 54px;
}

header ul {
    position: relative;
}

header ul li {
    position: relative;
    list-style: none;
    float: left;
}

header ul li a {
    color: #fff;
    font-size: 1.1em;
    padding: 28px 25px;
    text-decoration: none;
    display: flex;
    justify-content: space-between;
}

header ul li a:link {
    color: #e6e6e6;
}

header ul li a:hover,
.menu-item-active:link,
.menu-item-active:visited {
    color: #f4bb15;
}

a.menu-item-active:link,
a.menu-item-active:visited {
    background-image: url('../img/menu-item-active-bg.png');
    background-position: bottom center;
    background-repeat: no-repeat;
}

header ul li a:hover {
    background: #434343;
}

header ul li b {
    padding-left: 4px;
}

header ul li ul {
    position: absolute;
    left: 0;
    width: 200px;
    background: #333;
    display: none;
}

header ul li:hover > ul {
    display: block;
}

header ul li ul li {
    position: relative;
    width: 100%;
    border: 1px solid rgba(0, 0, 0, 0.2);
}

header ul li ul li ul {
    top: 0;
    left: 200px;
}

/* make it responsive */
@media (max-width: 900px) {
    header {
        padding: 10px 32px;
    }

    header nav {
        position: absolute;
        width: 100%;
        top: 66px;
        left: 0;
        background: #333;
        display: none;
    }

    header.active nav {
        display: initial;
    }

    header nav ul li {
        width: 100%;
    }

    a.menu-item-active:link,
    a.menu-item-active:visited {
        background-image: none;
    }

    header nav ul li ul {
        position: relative;
        width: 100%;
        left: 0;
    }

    header ul li ul li ul {
        top: 0;
        left: 0;
    }

    header nav ul li:hover ul li {
        background: #333;
    }

    .menuToggle {
        position: relative;
        width: 40px;
        height: 50px;
        cursor: pointer;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .menuToggle::before {
        content: '';
        position: absolute;
        width: 100%;
        height: 3px;
        background: #fff;
        transform: translateY(-12px);
        box-shadow: 0 12px #fff;
    }

    .menuToggle::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 3px;
        background: #fff;
        transform: translateY(12px);
    }

    header.active .menuToggle::before {
        transform: rotate(45deg);
        box-shadow: 0 0 #fff;
    }

    header.active .menuToggle::after {
        transform: rotate(315deg);
    }
}