.sponsor-bg[data-astro-cid-u755hcud]{opacity:0;transition:opacity .3s}.sponsor-btn[data-astro-cid-u755hcud]:hover .sponsor-bg[data-astro-cid-u755hcud]{opacity:1;animation:2s ease-in-out infinite shimmer}@keyframes shimmer{0%{background:#fff0}50%{background:#ffffff26}to{background:#fff0}}