.date-heading{position:sticky;top:0;z-index:1;margin:22px 0 0;padding:11px 4px 9px;border-bottom:1px solid #2a3036;background:#101316;color:#c7d0d6;font-size:15px;font-weight:750;letter-spacing:.03em}
.feed>.date-heading:first-child{margin-top:0}
html[data-theme="light"] .date-heading{border-color:#d7dee3;background:#f7f9fa;color:#586673}