.wc-whatsapp-btn {
  position: fixed;
  bottom: 60px;
  background: #25D366;
  color: white;
  border-radius: 100%;
  text-decoration: none;
  font-weight: bold;
  z-index: 9999;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.wc-right { right: 20px; }
.wc-left { left: 20px; }
.wc-whatsapp-btn svg{
  width: 35px;
  filter: drop-shadow(-2px 2px #20aa53);
}
.wc-whatsapp-btn svg *{
  fill: white;
}