Notification Toast

<button class="toast-trigger" id="toast-btn">Show Toast</button>
<div class="toast" id="toast-el">
  <div class="toast-icon">&#10003;</div>
  <div>
    <div style="font-weight:600;font-size:13px">Saved</div>
    <div style="color:#999;font-size:11px">Your changes have been saved.</div>
  </div>
</div>

.toast-trigger {
  padding: 10px 24px;
  background: #1a1a1a;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}
.toast {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0,0,0,.06);
  transform: translateX(120%);
  opacity: 0;
  transition: all .4s cubic-bezier(.16,1,.3,1);
  z-index: 10;
}
.toast.show {
  transform: translateX(0);
  opacity: 1;
}
.toast-icon {
  width: 26px;
  height: 26px;
  background: #f0fdf4;
  color: #16a34a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

document.getElementById('toast-btn').addEventListener('click', () => {
  const toast = document.getElementById('toast-el');
  toast.classList.add('show');
  setTimeout(() => toast.classList.remove('show'), 2500);
});