@import url('https://fonts.googleapis.com/css2?family=Fira+Sans:wght@300;800&display=swap');
   
    *{margin: 0px; padding: 0px; }
   
    body { background: rgb(176, 168, 175); width: 100%; font-family: 'Fira Sans', sans-serif; }

      h1 {margin-bottom: 10px; text-align: center; font-size: 90pt; font-weight: 800;}

      h2 {margin-bottom: 20px; text-align: center; font-size: 14pt; font-weight: 400;}

     .bloco {margin-top: 200px; display: block; position:relative; padding: 10px;}

      span {color:rgb(209, 3, 0); font-weight:800; font-size: 99pt; }


.circle{
  position: absolute;
  border-radius: 50%;
  background: white;
  animation: ripple 15s infinite;
  box-shadow: 0px 0px 1px 0px #508fb9;
}

.small{
  width: 200px;
  height: 200px;
  left: -100px;
  bottom: -100px;
}

.medium{
  width: 400px;
  height: 400px;
  left: -200px;
  bottom: -200px;
}

.large{
  width: 600px;
  height: 600px;
  left: -300px;
  bottom: -300px;
}

.xlarge{
  width: 800px;
  height: 800px;
  left: -400px;
  bottom: -400px;
}

.xxlarge{
  width: 1000px;
  height: 1000px;
  left: -500px;
  bottom: -500px;
}

.shade1{
  opacity: 0.2;
}
.shade2{
  opacity: 0.5;
}

.shade3{
  opacity: 0.7;
}

.shade4{
  opacity: 0.8;
}

.shade5{
  opacity: 0.9;
}

@keyframes ripple{
  0%{
    transform: scale(0.8);
  }
  
  50%{
    transform: scale(1.2);
  }
  
  100%{
    transform: scale(0.8);
  }
}