.art-hmenu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav.art-nav.clearfix {
    background: #164A5A;
}

.art-hmenu li {
    position: relative;
    padding: 10px 15px;
}

.art-hmenu li a {
    text-decoration: none;
    color: #c7c7c7;
    display: block;
}

.art-hmenu>li>ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    border: 1px solid #ccc;
    list-style: none;
    padding: 0;
    margin: 0;
    z-index: 1000;
}

.art-hmenu>li:hover>ul {
    display: block;
}

.art-hmenu ul li {
    padding: 10px;
    white-space: nowrap;
}

.art-hmenu ul li a {
    color: #164A5A;
}

.art-hmenu ul li a:hover {
    color: #fb6959;
}

.art-hmenu ul li:hover {
    background-color: #164a5abe;
}

@media screen and (max-width: 768px) {
    .art-hmenu {
        flex-direction: column;
    }

    .art-hmenu ul li a {
        color: #c7c7c7;
    }

    .art-hmenu>li>ul {
        position: static;
        display: none;
        border: none;
        background-color: transparent;
    }

    .art-hmenu>li.open>ul {
        display: block;
    }

    .art-hmenu li {
        padding: 10px 0;
    }

    .art-hmenu ul li {
        padding: 5px 15px;
    }

    .art-hmenu>li>a::after {
        content: '+';
        float: right;
    }

    .art-hmenu>li.open>a::after {
        content: '-';
    }
}