.cita-previa {
  position: fixed;
  bottom: 90px;
  right: 20px;
  z-index: 776;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  padding: 15px;
  overflow: hidden;
  border-radius: 50%;
  background-color: #0391b7;
  box-shadow: 0 4px 10px rgba(0, 0, 0, .2);
  color: #fff;
  text-decoration: none;
  font-size: 24px;
  transform: scale(1);
  transition: .3s ease-out;
}

.cita-previa .texto,
.boton-whatsapp .texto-wa {
  max-width: 0;
  margin-right: 0;
  overflow: hidden;
  opacity: 0;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 700;
  transition: max-width .3s ease-out, opacity .2s ease-out, margin-right .3s ease-out;
}

.cita-previa:hover,
.boton-whatsapp:hover {
  width: auto;
  height: auto;
  padding: 10px 25px;
  border-radius: 50px;
  color: #fff;
  transform: scale(1.1);
  flex-direction: row-reverse;
}

.cita-previa:hover .texto,
.boton-whatsapp:hover .texto-wa {
  max-width: 200px;
  margin-right: 10px;
  opacity: 1;
}

.cita-previa:hover .icono,
.boton-whatsapp:hover .icono-wa {
  font-size: 22px;
}

.boton-whatsapp {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 777;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  padding: 15px;
  overflow: hidden;
  border-radius: 50%;
  background-color: #25d366;
  box-shadow: 0 4px 10px rgba(0, 0, 0, .2);
  color: #fff;
  text-decoration: none;
  font-size: 24px;
  transform: scale(1);
  transition: .3s ease-out;
}

.boton-whatsapp:hover {
  background-color: #128c7e;
}