.whatsapp-chat {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 50;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  color: #fff;
  box-shadow: 0 12px 32px rgba(23, 27, 28, .28);
  transition: transform .2s ease, box-shadow .2s ease;
}

.whatsapp-chat:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 16px 38px rgba(23, 27, 28, .34);
}

.whatsapp-chat:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.whatsapp-chat svg {
  width: 31px;
  height: 31px;
  fill: currentColor;
}

@media (max-width: 620px) {
  .whatsapp-chat {
    right: 16px;
    bottom: 16px;
    width: 54px;
    height: 54px;
  }
}