@charset "UTF-8";

.loading {
  position: relative;
  height: 150px;
}

.loading:before {
  content: "読み込み中";
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, 40px);
}

.loading:after {
  content: "";
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg);
  width: 50px;
  height: 50px;
  border: 5px solid #000;
  border-right: 5px solid transparent;
  border-radius: 50%;
  animation: loading 2s linear infinite;
}

@keyframes loading {
  0% {
    opacity: 0.3;
  }
  50% {
    opacity: 0.9;
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
    opacity: 0.3;
  }
}