#container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100vh;
  position: absolute;
  background-color: #ffffff;
  transition: opacity 0.5s ease;
  z-index: 999;
}

.loader {
  display: block;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  animation: animacao 4s infinite;
  background-color: #4c78b6;
}

.inactive .loader {
  display: none;
}

@keyframes animacao {
  0% {
    width: 60px;
    height: 60px;
  }
  20% {
    width: 40px;
    height: 40px;
  }
  40% {
    width: 30px;
    height: 30px;
  }
  70% {
    width: 50px;
    height: 50px;
  }
  100% {
    width: 59px;
    height: 59px;
  }
}