body {
  background-size: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  /*
  height: 100vh;
  width: 100vw;
  */
}

.container {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  position: relative;
	animation-name: pulse;
	animation-duration: 6s;	
	animation-iteration-count: infinite;
  animation-timing-function: linear;
  box-shadow: inset 0 0 0 3px #64b5f6; 
  z-index: -1;
}

.container:after {
  content: 'Inhalo';
  position: absolute;
  color: rgba(255, 255, 255, .7);
  top: calc(50% - 10px);
  font-size: 24px;
  font-family: Helvetica;
  width: 100%;
  vertical-align: middle;
  text-align: center;
	animation-name: text;
	animation-duration: 6s;	
	animation-iteration-count: infinite;
  animation-timing-function: linear;
}

.container:before {
  content: '';
  width: 16px;
  height: 50%;
  position: absolute;
  display: block;
  top: 0;
  left: calc(50% - 8px);
  z-index: 999;
  background-image:
    radial-gradient(
      circle at top center,
      #2196f3 0%,
      #2196f3 8px,
      transparent 8px,
      transparent 100%
    );
  animation-timing-function: linear;
  transform-origin: center bottom;
	animation-name: rotate;
	animation-duration: 6s;	
	animation-iteration-count: infinite; 
}

.circle {
  width: 94%;
  height: 94%;
  border-radius: 50%;
  background: linear-gradient(to bottom, #bbdefb 0%, #1e88e5 100%);
  position: absolute;
  top: 3%;
  left: 3%;
}

.circle:before {
  content: '';
  width: 16px;
  height: 50%;
  position: absolute;
  display: block;
  top: -9px;
  left: calc(50% - 8px);
  background-image:
    radial-gradient(
      circle at top center,
      rgba(255, 255, 255, 1) 0%,
      rgba(255, 255, 255, 1) 8px,
      transparent 8px,
      transparent 100%
    );
}

.circle:after {
  content: '';
  width: 16px;
  height: 50%;
  position: absolute;
  display: block;
  bottom: -9px;
  left: calc(50% - 8px);
  background-image:
    radial-gradient(
      circle at bottom center,
      rgba(255, 255, 255, 1) 0%,
      rgba(255, 255, 255, 1) 8px,
      transparent 8px,
      transparent 100%
    );
}

@keyframes text {
  0% {
    content: 'Inhalo';
  }
  100% {
    content: 'Exhalo';
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg)
  }
  50% {
    transform: rotate(180deg)
  }
  100% {
    transform: rotate(360deg)
  }
}

@keyframes pulse {
	0% {
		transform: scale(.6);
	}
	50% {
		transform: scale(1);
	}	
	100% {
		transform: scale(.6);
	}			
}