.sponsor-bg[data-astro-cid-tuewn3d2]{opacity:0;transition:opacity .3s ease}.sponsor-btn[data-astro-cid-tuewn3d2]:hover .sponsor-bg[data-astro-cid-tuewn3d2]{opacity:1;animation:shimmer 2s ease-in-out infinite}@keyframes shimmer{0%{background:#fff0}50%{background:#ffffff26}to{background:#fff0}}