.btn-whats{
  background-color: #25D366;
  color: white;
  width: 70px;
  height: 70px;
  text-decoration: none;
  border-radius: 800px;
  padding: 20px;
  top: 80%;
  left: 90%;
  position: fixed;
  transition: all .6s;
  animation: 2s btn-whats;
  animation-fill-mode: both;
  animation-iterative-count: 1;
  z-index: 1;
}.btn-whats:hover{
  box-shadow: 0 0 20px rgba(0, 0, 0, .2);
}

.pulse{
  animation: pulse 2s infinite;
}

.btn-whats > i{
  position: relative;
  font-size: 2.4rem;
  margin: -5px 0px;
  color: #fff;
}

@media only screen and (min-width: 1024px){
  .btn-whats{
    left: 89% !important;
  }
}

@media only screen and (min-width: 900px){
  .btn-whats{
    left: 86%;
  }
}

@media only screen and (min-width: 780px){
  .btn-whats{
    left: 84%;
  }
}


@media only screen and (min-width: 768px){
  .btn-whats{
    left: 86%;
  }
}

@media only screen and (max-width: 700px){
  .btn-whats{
    left: 84%;
  }
  h1{
    font-size: 1.8rem;
  }
}

@media only screen and (max-width: 450px){
  .btn-whats{
    left: 80%;
  }
  
}

@media only screen and (max-width: 350px){
  .btn-whats{
    left: 75%;
  }
}
/* Animações */
@keyframes btn-whats{
  10%{
    transform: translate(0, 200px); 
  }
  50%{
    transform: translate(0, -40px);
  }
  
  70%{
    transform: scale(1.1);
  }
}

@keyframes pulse {
  50%{
    transform: scale(1.1);
  }
}