.ripple-background {
    z-index: -1;
    position: fixed;
}
.circle {
    position: absolute;
    border-radius: 50%;
    background: #000d26;
    animation: ripple 15s infinite;
    box-shadow: 0px 0px 1px 0px #508fb9;
}

.small {
    width: 100px;
    height: 100px;
    right: -70px;
    bottom: -120px;
}

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

.large {
    width: 450px;
    height: 450px;
    right: -300px;
    bottom: -300px;
}

.xlarge {
    width: 650px;
    height: 650px;
    right: -400px;
    bottom: -400px;
}

.xxlarge {
    width: 870px;
    height: 870px;
    right: -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);
  }
}