.wa-float{
  display: flex;
  align-items: center;
  justify-content: center;

  padding: 0.75rem;              /* 12px */
  border-radius: 9999px;
  background-color: rgb(37, 211, 102);

  position: fixed;
  bottom: 2.5rem;                /* 40px */
  right: 2.5rem;                 /* 40px */
  cursor: pointer;

  box-shadow: 0 20px 25px -5px rgba(0,0,0,.10),
              0 10px 10px -5px rgba(0,0,0,.04);

  z-index: 9999;
  text-decoration: none;
}

.wa-float svg{
  width: 30px;
  height: 30px;
  display: block;
  fill: #fff;   /* icono blanco */
}