MegaMenu.css

.quiqqer-menu-megaMenu {
    --_qui-megaMenu-link-color: var(--qui-nav-link-color, var(--qui-body-color, #202428));
    --_qui-megaMenu-link-color--hover: var(--qui-nav-link-color--hover, var(--qui-color-primary, #202428));
    --_qui-megaMenu-sublink-color: var(--qui-nav-sublink-color, var(--qui-body-color, #202428));
    --_qui-megaMenu-sublink-color--hover: var(--qui-nav-sublink-color--hover, var(--qui-color-primary, #202428));
    --_qui-megaMenu-text-color: var(--qui-nav-text-color, var(--qui-body-color, #202428));
    --_qui-megaMenu-text-color--muted: var(--qui-nav-text-color--muted, var(--qui-text-muted, #646e7d));

    float: left;
    position: relative;
    z-index: 50;
    width: 100%;
}

.quiqqer-menu-megaMenu .megaMenu-hide-on-desktop  {
    width: 100%;
}

.quiqqer-menu-megaMenu-list {
    margin: 0;
    padding: 0;
}

.quiqqer-menu-megaMenu-list-item {
    display: block;
    float: left;
    list-style-type: none;
    padding: 10px;
    position: relative;
}

.quiqqer-menu-megaMenu-list-item-inner {
    display: block;
    cursor: pointer;
}

/** sub menu data
 ================================================= */

.quiqqer-menu-megaMenu-list-item-menu {
    align-content: stretch;
    box-shadow: 0 10px 20px 0 rgba(0, 0, 0, 0.35);
    display: none;
    left: 0;
    position: absolute;
    max-width: 1200px;
    width: 100%;
}

/** sub menu data
 ================================================= */

.quiqqer-menu-megaMenu-mobile {
    cursor: pointer;
    display: block;
    float: right;
    font-size: 20px;
    line-height: 60px;
    padding: 0 10px;
}

.quiqqer-menu-close {
    display: none;
}

.quiqqer-menu-levels {
    transition: all 0.2s;
    transition-timing-function: ease-in-out;
}

.quiqqer-menu-levels-rotate {
    transform: rotate(90deg);
}

.quiqqer-navigation-entry .quiqqer-menu-active-level {
    background: rgba(255, 255, 255, 0.10);
    font-weight: 500;
}

.page-navigation li {
    margin-top: 0;
    margin-bottom: 0;
}

.page-navigation .page-navigation-level-1 a {
    border: none;
}