* { margin: 0; padding: 0; box-sizing: border-box; }
html, body, #root { width: 100%; height: 100%; }
body { overflow: hidden; }
.page-frame { width: 100%; height: 100%; border: none; display: block; }
.loading, .error { padding: 24px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-size: 15px; color: #333; }
.skeleton { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: #bbb; font-size: 13px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }