hypothetical/resources/assets/less/elements/nav.less

nav.navbar {
    background-color: @c_base;
    border: none;
    z-index: 1;

    .navbar-logo {
        top: 25px;
        left: 15px;
        width: 150px;
        height: 150px;
        background-image: url('/img/logo.png');
        background-size: contain;
        background-position: center center;
        background-repeat: no-repeat;
    }

    #navbar {
        box-shadow: none;
        border: none;

        ul.nav {
            li {
                a {
                    color: @c_text_light;
                    font-weight: bold;
                    text-decoration: none;
                }

                &:hover a { color: @c_text; }
                &.active a { color: @c_text; }
                &.active a, &.active:hover a, &:hover a, &:focus a { background-color: transparent; }
            }
        }
    }

    .navbar-toggle {
        border: none;
        &, &:hover, &:focus { background-color: transparent; }
     }
}