*{margin:0;padding:0;box-sizing:border-box}.flex-center,body .app,body .hb-container,html .app,html .hb-container{display:flex;justify-content:center;align-items:center}body .app.app,body .hb-container.app,html .app.app,html .hb-container.app{height:100vh;overflow:hidden;background:linear-gradient(135deg,#112233 10%,#223344 90%)}body .app.hb-container,body .hb-container.hb-container,html .app.hb-container,html .hb-container.hb-container{flex-wrap:wrap;max-width:100%;width:400px}