html,
body {
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: white;
}

* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

canvas {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}

#loading-screen {
  position: absolute;
  z-index: 2;
  width: 100vw;
  height: 100vh;
  background-color: white;
  opacity: 1;
  transition: 1s opacity;
  display: flex;
  justify-content: center;
  align-items: center;
}

#loading-screen.fade-out {
  opacity: 0;
}

.loader {
  width: 48px;
  height: 48px;
  border: 5px solid #000;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  position: relative;
  animation: pulse 1s linear infinite;
}
.loader:after {
  content: '';
  position: absolute;
  width: 48px;
  height: 48px;
  border: 5px solid #000;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  animation: scaleUp 1s linear infinite;
}

@keyframes scaleUp {
  0% { transform: translate(-50%, -50%) scale(0) }
  60% , 100% { transform: translate(-50%, -50%)  scale(1)}
}
@keyframes pulse {
  0% , 60% , 100%{ transform:  scale(1) }
  80% { transform:  scale(1.2)}
}