@keyframes spinner {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.spinner div {
  width: 64px;
  height: 64px;
  border: 8px solid #0B3954;
  border-top-color: transparent;
  border-radius: 50%;
}
.spinner div {
  animation: spinner 1s linear infinite;
  top: 100px;
  left: 100px
}
.spinner-container {
  width: 100vw;
  height: 100vh;
  display: inline-block;
  overflow: hidden;
  background: #ffffff;
}
.spinner {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  transform: translateZ(0) scale(1);
  backface-visibility: hidden;
  transform-origin: 0 0;
}
.spinner div { box-sizing: content-box; }