.image-wrapper {
  position: relative;
  display: inline-block; /* blockまたはinline-block */
  width: 100%;
  height: auto;
}

.image-wrapper img.lazy-load-image {
  display: block;
  width: 100%;
  height: auto;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.image-wrapper img.lazy-load-image.loaded {
  opacity: 1;
}

.image-wrapper .spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  border: 4px solid #ccc;
  border-top: 4px solid #4eb34c;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 1;
  pointer-events: none;
}

/* スピナーのアニメーション */
@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}