Back to CSS Banners & Alerts CSS Pulsing Banner for Live Updates Pure CSS
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HTML 
<section class="ba-pul" aria-label="Pulsing live updates banner demo">
  <span class="section-mark">— Live status banners —</span>

  <div class="banner banner--breaking">
    <div class="breaking-pill">
      <span class="live-dot" aria-hidden="true"></span>
      <span class="breaking-label">Breaking</span>
    </div>
    <div class="breaking-ticker">
      <div class="ticker-track">
        <span>API response times elevated across US-East-1 · Engineers investigating</span>
        <span class="ticker-sep">◆</span>
        <span>New deployment pipeline rolled out to 30% of production fleet</span>
        <span class="ticker-sep">◆</span>
        <span>Incident INC-9341 opened · ETA unknown · Follow status page for updates</span>
        <span class="ticker-sep">◆</span>
        <span>API response times elevated across US-East-1 · Engineers investigating</span>
        <span class="ticker-sep">◆</span>
        <span>New deployment pipeline rolled out to 30% of production fleet</span>
        <span class="ticker-sep">◆</span>
        <span>Incident INC-9341 opened · ETA unknown · Follow status page for updates</span>
        <span class="ticker-sep">◆</span>
      </div>
    </div>
  </div>

  <div class="banner banner--status">
    <div class="status-left">
      <div class="status-orb-wrap" aria-hidden="true">
        <div class="status-orb status-orb--green"></div>
        <div class="status-orb-ring"></div>
      </div>
      <div class="status-text">
        <div class="status-name status-name-green">All Systems Operational</div>
        <div class="status-desc">100% uptime in the last 30 days · Last checked 12 seconds ago</div>
      </div>
    </div>
    <div class="status-right">
      <div class="status-stat"><div class="status-stat-val status-val-green">99.98%</div><div class="status-stat-label">Uptime</div></div>
      <div class="status-divider" aria-hidden="true"></div>
      <div class="status-stat"><div class="status-stat-val">43ms</div><div class="status-stat-label">P50 Latency</div></div>
      <div class="status-divider" aria-hidden="true"></div>
      <div class="status-stat"><div class="status-stat-val">0</div><div class="status-stat-label">Open Incidents</div></div>
    </div>
  </div>

  <div class="banner banner--degraded">
    <div class="degraded-icon" aria-hidden="true"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round"><path d="M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z"/><line x1="12" y1="9" x2="12" y2="13"/><line x1="12" y1="17" x2="12.01" y2="17"/></svg></div>
    <div class="degraded-content">
      <div class="degraded-title">Webhook Delivery Delayed<span class="degraded-badge">Degraded</span></div>
      <div class="degraded-desc">Webhook retries are experiencing delays of 8–14 minutes. Deliveries are queued and will complete once backlog clears.</div>
    </div>
    <div class="degraded-time">Since 14:32 UTC</div>
  </div>

  <div class="banner banner--live">
    <div class="live-badge">
      <div class="live-badge-dot" aria-hidden="true"></div>
      <div class="live-badge-text">Live</div>
    </div>
    <div class="live-content">
      <div>
        <div class="live-headline">Q2 Earnings Call — CEO addressing analyst questions now</div>
        <div class="live-meta">Stream started 34 minutes ago · Replay available after event</div>
      </div>
      <div class="live-viewers">
        <div class="live-viewers-num">4,821</div>
        <div class="live-viewers-label">Watching</div>
      </div>
    </div>
  </div>
</section>
CSS 
/* ─── 08 Pulsing Banner for Live Updates — broadcast ─────────── */
@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,400;0,600;0,700;0,800;1,700&family=Barlow:wght@300;400;500&display=swap');

.ba-pul {
  --ba-pul-bg: #080a0e;
  --ba-pul-surface: #0f1218;
  --ba-pul-border: rgba(255,255,255,0.06);
  --ba-pul-text: #e8ecf4;
  --ba-pul-muted: rgba(232,236,244,0.45);
  --ba-pul-red: #ff3b30;
  --ba-pul-green: #30d158;
  --ba-pul-amber: #ffd60a;
  --ba-pul-blue: #0a84ff;

  position: relative;
  width: 100%;
  min-height: 540px;
  background: var(--ba-pul-bg);
  background-image: radial-gradient(ellipse 70% 30% at 50% 0%, rgba(255,59,48,0.04) 0%, transparent 60%);
  font-family: 'Barlow', sans-serif;
  color: var(--ba-pul-text);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px;
  padding: 48px 16px;
  box-sizing: border-box;
}
.ba-pul *, .ba-pul *::before, .ba-pul *::after { box-sizing: border-box; margin: 0; padding: 0; }

.ba-pul .section-mark { font-family: 'Barlow Condensed', sans-serif; font-size: 9px; font-weight: 700; letter-spacing: 0.3em; text-transform: uppercase; color: rgba(255,255,255,0.15); align-self: flex-start; max-width: 760px; width: 100%; }
.ba-pul .banner { width: 100%; max-width: 760px; position: relative; overflow: hidden; }

.ba-pul .banner--breaking { background: var(--ba-pul-surface); border: 1px solid rgba(255,59,48,0.2); border-left: 3px solid var(--ba-pul-red); display: flex; align-items: stretch; height: 52px; }
.ba-pul .breaking-pill { background: var(--ba-pul-red); display: flex; align-items: center; gap: 8px; padding: 0 28px 0 18px; flex-shrink: 0; clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%); }
.ba-pul .live-dot { width: 8px; height: 8px; border-radius: 50%; background: white; flex-shrink: 0; animation: ba-pul-livePulse 1.8s ease-in-out infinite; }
@keyframes ba-pul-livePulse { 0%,100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255,255,255,0.5); } 50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(255,255,255,0); } }
.ba-pul .breaking-label { font-family: 'Barlow Condensed', sans-serif; font-size: 13px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; color: white; white-space: nowrap; }
.ba-pul .breaking-ticker { flex: 1; overflow: hidden; display: flex; align-items: center; padding: 0 16px; position: relative; }
.ba-pul .breaking-ticker::before, .ba-pul .breaking-ticker::after { content: ''; position: absolute; top: 0; bottom: 0; width: 32px; z-index: 2; pointer-events: none; }
.ba-pul .breaking-ticker::before { left: 0; background: linear-gradient(90deg, var(--ba-pul-surface), transparent); }
.ba-pul .breaking-ticker::after { right: 0; background: linear-gradient(-90deg, var(--ba-pul-surface), transparent); }
.ba-pul .ticker-track { display: flex; gap: 64px; white-space: nowrap; animation: ba-pul-scroll 22s linear infinite; font-family: 'Barlow Condensed', sans-serif; font-size: 15px; font-weight: 600; color: var(--ba-pul-text); letter-spacing: 0.04em; }
@keyframes ba-pul-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.ba-pul .ticker-sep { color: var(--ba-pul-red); opacity: 0.7; }

.ba-pul .banner--status { background: var(--ba-pul-surface); border: 1px solid var(--ba-pul-border); padding: 16px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.ba-pul .status-left { display: flex; align-items: center; gap: 14px; }
.ba-pul .status-orb-wrap { position: relative; width: 20px; height: 20px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.ba-pul .status-orb { width: 10px; height: 10px; border-radius: 50%; position: relative; z-index: 1; }
.ba-pul .status-orb--green { background: var(--ba-pul-green); }
.ba-pul .status-orb-ring { position: absolute; inset: 0; border-radius: 50%; background: var(--ba-pul-green); animation: ba-pul-ring 2s ease-out infinite; }
@keyframes ba-pul-ring { 0% { opacity: 0.6; transform: scale(1); } 100% { opacity: 0; transform: scale(2.8); } }
.ba-pul .status-name { font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.ba-pul .status-name-green { color: var(--ba-pul-green); }
.ba-pul .status-desc { font-size: 12px; color: var(--ba-pul-muted); margin-top: 1px; }
.ba-pul .status-right { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
.ba-pul .status-stat { text-align: right; }
.ba-pul .status-stat-val { font-family: 'Barlow Condensed', sans-serif; font-size: 18px; font-weight: 700; line-height: 1; animation: ba-pul-blink 3s ease-in-out infinite; color: var(--ba-pul-text); }
.ba-pul .status-val-green { color: var(--ba-pul-green); }
@keyframes ba-pul-blink { 0%,100% { opacity: 1; } 50% { opacity: 0.6; } }
.ba-pul .status-stat-label { font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ba-pul-muted); margin-top: 2px; }
.ba-pul .status-divider { width: 1px; height: 32px; background: var(--ba-pul-border); }

.ba-pul .banner--degraded { background: rgba(255, 214, 10, 0.05); border: 1px solid rgba(255, 214, 10, 0.2); padding: 12px 20px; display: flex; align-items: center; gap: 14px; }
.ba-pul .banner--degraded::before { content: ''; position: absolute; top: 0; bottom: 0; width: 60px; background: linear-gradient(90deg, transparent, rgba(255,214,10,0.15), transparent); animation: ba-pul-sweep 3s ease-in-out infinite; }
@keyframes ba-pul-sweep { from { left: -60px; } to { left: 110%; } }
.ba-pul .degraded-icon { flex-shrink: 0; width: 36px; height: 36px; border-radius: 8px; background: rgba(255,214,10,0.1); border: 1px solid rgba(255,214,10,0.3); display: flex; align-items: center; justify-content: center; animation: ba-pul-shake 4s ease-in-out infinite; }
@keyframes ba-pul-shake { 0%,90%,100% { transform: rotate(0); } 92% { transform: rotate(-3deg); } 94% { transform: rotate(3deg); } 96% { transform: rotate(-2deg); } 98% { transform: rotate(1deg); } }
.ba-pul .degraded-icon svg { width: 18px; height: 18px; color: var(--ba-pul-amber); }
.ba-pul .degraded-content { flex: 1; position: relative; z-index: 1; }
.ba-pul .degraded-title { font-family: 'Barlow Condensed', sans-serif; font-size: 14px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ba-pul-amber); display: flex; align-items: center; gap: 8px; }
.ba-pul .degraded-badge { font-family: 'Barlow Condensed', sans-serif; font-size: 9px; font-weight: 700; letter-spacing: 0.18em; padding: 2px 6px; border: 1px solid rgba(255,214,10,0.4); color: var(--ba-pul-amber); border-radius: 3px; animation: ba-pul-badgePulse 1.5s ease-in-out infinite; }
@keyframes ba-pul-badgePulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.ba-pul .degraded-desc { font-size: 12px; color: var(--ba-pul-muted); margin-top: 2px; line-height: 1.5; }
.ba-pul .degraded-time { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; color: rgba(255,214,10,0.5); white-space: nowrap; flex-shrink: 0; letter-spacing: 0.08em; }

.ba-pul .banner--live { background: var(--ba-pul-surface); border: 1px solid rgba(10,132,255,0.2); padding: 0; display: flex; align-items: stretch; }
.ba-pul .live-badge { background: var(--ba-pul-blue); padding: 0 20px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; flex-shrink: 0; position: relative; }
.ba-pul .live-badge::after { content: ''; position: absolute; top: 0; bottom: 0; right: -12px; width: 24px; background: var(--ba-pul-blue); clip-path: polygon(0 0, 0 100%, 100% 50%); }
.ba-pul .live-badge-dot { width: 7px; height: 7px; border-radius: 50%; background: white; animation: ba-pul-livePulse 1.5s ease-in-out infinite; }
.ba-pul .live-badge-text { font-family: 'Barlow Condensed', sans-serif; font-size: 11px; font-weight: 800; letter-spacing: 0.2em; color: white; text-transform: uppercase; }
.ba-pul .live-content { flex: 1; padding: 12px 20px 12px 28px; display: flex; align-items: center; gap: 16px; }
.ba-pul .live-headline { font-family: 'Barlow Condensed', sans-serif; font-size: 16px; font-weight: 700; color: var(--ba-pul-text); line-height: 1.3; letter-spacing: 0.02em; }
.ba-pul .live-meta { font-size: 11px; color: var(--ba-pul-muted); margin-top: 2px; font-style: italic; }
.ba-pul .live-viewers { text-align: right; flex-shrink: 0; }
.ba-pul .live-viewers-num { font-family: 'Barlow Condensed', sans-serif; font-size: 22px; font-weight: 800; color: var(--ba-pul-blue); line-height: 1; animation: ba-pul-blink 2s ease-in-out infinite; }
.ba-pul .live-viewers-label { font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ba-pul-muted); margin-top: 2px; }

@media (prefers-reduced-motion: reduce) { .ba-pul *, .ba-pul *::before, .ba-pul *::after { animation: none !important; } }