Loading spinners look outdated. Modern sites use skeleton screens that show content placeholders while data loads. Pure CSS, no libraries needed. The Basic Skeleton: .skeleton { background: linear-gradient( 90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75% ); background-size: 200% 100%; animation: loading 1.5s infinite; border-radius: 4px; } @keyframes loading { 0% { background-position: 200% 0; } […]