abundance/assets/css/panes.css

a CMS based on tre

body .pane {
    background: #333;
    overflow: hidden;
}

.divider {
    border-top: 1px solid #111;
    border-left: 1px solid #111;
    background: #222;
    border-bottom: 1px solid #444;
    border-right: 1px solid #333;
}