[Replicant]

Here's a CSS implementation of this you can give a try. You may have to adjust to taste. Add it to css_additional.css

tr.topic-item.sticky:last-child > td {
    border-bottom: 1px solid #303030;
}

tbody.topic-list.sticky-list:after {
    
    content: "Normal Topics";
    height: 33px;
    line-height: 33px;
    font-weight: bold;
    padding-left:10px
}