Second tier sub nav styling

[getdave]

The second and third level children of the nav sub need styling.

Ensure this is actioned to hide children by default and only show when you're within that particular seciton.

.nav-sub .children {
    @include list-reset;
    font-size: 0.9em;
    position: absolute;
    left: -999em;

    li:last-child {
        border-bottom: 0;
    }

    a {
        @include rem(padding-left,25px);
        @include opacity(0.9);
    }
}

.nav-sub .current_page_item,
.nav-sub .current_page_ancestor,
.nav-sub .current-cat,
.nav-sub .current-cat-parent {
    .children {
        position: static;
        left: auto;
    }
}