@keyframes skeleton-shimmer{0%{opacity:1}50%{opacity:.4}to{opacity:1}}.challenges-loading__button,.challenges-loading__card,.challenges-loading__heading{background:var(--bg-2);border-radius:var(--radius-sm);animation:skeleton-shimmer 1.6s ease-in-out infinite}.challenges-loading__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-lg)}.challenges-loading__heading{height:32px;width:180px}.challenges-loading__button{height:36px;width:120px;border-radius:var(--radius-md)}.challenges-loading__card{height:110px;width:100%;border-radius:var(--radius-md)}