body {
  margin: 0;
  overflow: auto;
}
.init-page {
  width: 100vw;
  height: 100vh;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}
.loading {
  width: 45px;
  aspect-ratio: 1;

  --c: no-repeat linear-gradient(rgb(22, 93, 255) 0 0);

  background: var(--c) 0% 50%, var(--c) 50% 50%, var(--c) 100% 50%;
  background-size: 20% 100%;
  animation: spin 1s infinite linear;
}

@keyframes spin {
  0% {
    background-size: 20% 100%, 20% 100%, 20% 100%;
  }
  33% {
    background-size: 20% 10%, 20% 100%, 20% 100%;
  }
  50% {
    background-size: 20% 100%, 20% 10%, 20% 100%;
  }
  66% {
    background-size: 20% 100%, 20% 100%, 20% 10%;
  }
  100% {
    background-size: 20% 100%, 20% 100%, 20% 100%;
  }
}