.simple-skeleton{--simple-skeleton-speed:1.5s;--simple-skeleton-from-opacity:1;--simple-skeleton-to-opacity:0.4;animation:simple-skeleton-loading var(--simple-skeleton-speed) linear infinite}@keyframes simple-skeleton-loading{0%,to{opacity:var(--simple-skeleton-to-opacity)}50%{opacity:var(--simple-skeleton-from-opacity)}}