.wpp-float{
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 999;

  width: 56px;
  height: 56px;
  border-radius: 50%;

  display: grid;
  place-items: center;

  background: #25D366 !important; /* verde oficial WhatsApp */
  color: #fff;

  box-shadow: 0 14px 30px rgba(0,0,0,.25);
  transition: transform .2s ease, filter .2s ease;
}

.wpp-float:hover{
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.wpp-float__icon{
  width: 40px;
  height: 40px;
}