.headerNavMenu {
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    align-items: center;
    padding: 10px 20px;
    width: 100%;
    color: #fff;
    z-index: 1;
}

.headerNavMenu .headerNavMenuIndexImage {
    width: 150px;
    height: 50px;
    background-image: url(https://rsgt.com.hk/img/rs2024logo-white.png);
    background-repeat: no-repeat;
    background-size: contain;
}

.headerNavMenu .headerNavMenuContent {
    font-size: 16px;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem {
    position: relative;
    margin: 0 10px;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem>a {
    color: #fff;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:hover::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #fff;
    z-index: 2;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #fff;
    z-index: 2;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:nth-child(4):before,
.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:nth-child(7):before,
.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:nth-child(9):before,
.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:nth-child(10):before,
.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem:nth-child(13):before {
    display: none;
    content: "";
    position: absolute;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid #fff;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    transition: opacity 10ms ease 150ms;
    opacity: 1;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem .contentItemSub {
    display: none;
    position: absolute;
    top: 100%;
    left: -50%;
    padding: 0 20px;
    width: -moz-max-content;
    width: max-content;
    background-color: #fff;
    box-shadow: 0 5px 10px #ccc;
    border-radius: 5px;
    z-index: 999;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem .contentItemSub a:hover {
    color: #2182FC;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem .contentItemSub li:hover {
    background-color: transparent;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem.has-dropdown:hover::after {
    display: none;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem.has-dropdown:hover::before {
    display: block;
}

.headerNavMenu .headerNavMenuContent .headerNavMenuContentItem .contentItem.has-dropdown:hover .contentItemSub {
    display: block;
}