Megamenu/classic/megamenu-classic.css

/* SharePoint MegaMenu 2.1.0 - Classic pages */
:root {
    --megaMenuBarHeight: 44px;
    --megaMenuContentWidth: 1200px;
    --megaMenuFlyoutWidth: 288px;
    --megaMenuZIndex: 6000;
}

.megamenu-classic-container {
    position: relative;
    width: 100%;
    margin: 0;
    padding: 0;
    overflow: visible;
    z-index: var(--megaMenuZIndex);
    font-family: "Segoe UI", Arial, sans-serif;
}

.mega-menu-main {
    position: relative;
    box-sizing: border-box;
    width: 100%;
    min-height: var(--megaMenuBarHeight);
    overflow: visible;
    border-top: 1px solid #edebe9;
    border-bottom: 1px solid #edebe9;
    background: #fff;
    color: #323130;
}

.mega-menu-top-level {
    display: flex;
    align-items: stretch;
    box-sizing: border-box;
    width: 100%;
    max-width: var(--megaMenuContentWidth);
    min-height: var(--megaMenuBarHeight);
    margin: 0 auto;
    padding: 0 24px;
    list-style: none;
}

.mega-menu-top-item {
    position: static;
    display: flex;
    align-items: stretch;
    margin: 0;
    padding: 0;
}

.mega-menu-mode-flyout .mega-menu-top-item {
    position: relative;
}

.menu-item-link,
.menu-item-text {
    position: relative;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    min-height: var(--megaMenuBarHeight);
    padding: 0 16px;
    border: 0;
    background: transparent;
    color: #323130;
    cursor: pointer;
    font-size: 14px;
    line-height: 20px;
    text-decoration: none;
    white-space: nowrap;
    outline: none;
}

.menu-item-text[aria-haspopup="true"]::after {
    content: "";
    width: 6px;
    height: 6px;
    margin: -3px 0 0 10px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg);
}

.menu-item-link:hover,
.menu-item-text:hover,
.menu-item-text[aria-expanded="true"] {
    background: #f3f2f1;
    color: #323130;
    text-decoration: none;
}

.menu-item-link:focus,
.menu-item-text:focus,
.mega-menu-category a:focus,
.flyout-link:focus {
    outline: 2px solid #0078d4;
    outline-offset: -2px;
}

.mega-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    box-sizing: border-box;
    border: 1px solid #edebe9;
    border-top: 0;
    background: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .16);
    color: #323130;
    z-index: calc(var(--megaMenuZIndex) + 1);
}

.mega-menu.js-open {
    display: block;
}

.mega-menu-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    box-sizing: border-box;
    width: 100%;
    max-width: var(--megaMenuContentWidth);
    margin: 0 auto;
    padding: 24px;
    gap: 24px 32px;
}

.mega-menu-category {
    min-width: 0;
    padding-bottom: 8px;
}

.mega-menu-category h3 {
    margin: 0 0 10px;
    padding: 0 0 8px;
    border-bottom: 1px solid #edebe9;
}

.mega-menu-category h3 a,
.mega-menu-category h3 span {
    display: block;
    color: #323130;
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
    text-decoration: none;
}

.mega-menu-category h3 a:hover {
    color: #0078d4;
    text-decoration: underline;
}

.mega-menu-category ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.mega-menu-category li {
    margin: 0;
    padding: 0;
}

.mega-menu-category li a {
    display: block;
    margin: 0 -8px;
    padding: 6px 8px;
    color: #605e5c;
    font-size: 14px;
    line-height: 20px;
    text-decoration: none;
}

.mega-menu-category li a:hover {
    background: #f3f2f1;
    color: #323130;
}

.mega-menu-flyout {
    right: auto;
    width: var(--megaMenuFlyoutWidth);
    min-width: 240px;
    border-top: 1px solid #edebe9;
}

.flyout-list {
    box-sizing: border-box;
    width: 100%;
    margin: 0;
    padding: 8px 0;
    background: #fff;
    list-style: none;
}

.flyout-item {
    position: relative;
    margin: 0;
    padding: 0;
}

.flyout-link {
    position: relative;
    display: flex;
    align-items: center;
    box-sizing: border-box;
    width: 100%;
    min-height: 36px;
    padding: 8px 36px 8px 16px;
    border: 0;
    background: #fff;
    color: #323130;
    cursor: pointer;
    font-size: 14px;
    line-height: 20px;
    text-decoration: none;
    outline: none;
}

.flyout-link:hover,
.flyout-item:focus-within > .flyout-link {
    background: #f3f2f1;
    color: #323130;
}

.flyout-link-has-children::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 18px;
    width: 6px;
    height: 6px;
    margin-top: -4px;
    border-top: 1px solid currentColor;
    border-right: 1px solid currentColor;
    transform: rotate(45deg);
}

.flyout-level-3 {
    position: absolute;
    top: -9px;
    left: 100%;
    display: none;
    width: var(--megaMenuFlyoutWidth);
    border: 1px solid #edebe9;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .16);
    z-index: calc(var(--megaMenuZIndex) + 2);
}

.flyout-item:hover > .flyout-level-3,
.flyout-item:focus-within > .flyout-level-3 {
    display: block;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 767px) {
    .mega-menu-top-level {
        flex-wrap: wrap;
        padding: 0 8px;
    }

    .mega-menu-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }

    .flyout-level-3 {
        position: static;
        display: block;
        width: 100%;
        border: 0;
        box-shadow: none;
        padding-left: 16px;
    }
}

@media print {
    #Mega-Menu,
    .megamenu-classic-container {
        display: none !important;
    }
}