Notification Bell

<button class="nuda-nbell" aria-label="Notifications (3 unread)">
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor"
       stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
    <path d="M18 8A6 6 0 006 8c0 7-3 9-3 9h18s-3-2-3-9" />
    <path d="M13.7 21a2 2 0 01-3.4 0" />
  </svg>
  <span class="nuda-nbell__badge">3</span>
</button>

.nuda-nbell {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  color: #fafafa;
  cursor: pointer;
  transition: background .25s;
}

.nuda-nbell:hover {
  background: rgba(255,255,255,.07);
}

.nuda-nbell svg {
  width: 16px;
  height: 16px;
  animation: _bellRing 2.4s ease-in-out infinite;
}

.nuda-nbell__badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: #ff5e7a;
  color: #fafafa;
  border-radius: 99px;
  border: 2px solid #09090b;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

@keyframes _bellRing {
  0%,40%,100% {
    transform: rotate(0);
  }
  50% {
    transform: rotate(-12deg);
  }
  55% {
    transform: rotate(10deg);
  }
  60% {
    transform: rotate(-6deg);
  }
  65% {
    transform: rotate(4deg);
  }
  70% {
    transform: rotate(0);
  }
}

@media (prefers-reduced-motion:reduce) {
  .nuda-nbell svg {
    animation: none;
  }
}