/* ローダー Loader */
.loader {
  display: inline-block;
  width: 48px;
  height: 48px;
  position: relative;
}

.loader::before,
.loader::after {
  content: "";
  box-sizing: border-box;
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 6px solid #1976d2;
  animation: loader-spin 0.7s cubic-bezier(0.5, 0, 0.5, 1) infinite;
  border-color: #1976d2 transparent transparent;
}

@keyframes loader-spin {
  0% {
    transform: rotate(0deg);
    opacity: 1;
  }

  100% {
    transform: rotate(360deg);
    opacity: 1;
  }
}