.config-panel{background-color:#f0f0f0;padding:15px;border-radius:8px;margin-bottom:20px}.config-panel h4{margin:10px}label{margin-right:10px}.chord-display{display:flex;justify-content:center;align-items:center;margin:0}.empty-chord{width:100px;width:300px}.chord-box,.empty-chord{padding:20px;border-radius:8px;text-align:center;flex:1;margin:10px}.chord-box{background-color:#f9f9f9;box-shadow:0 2px 4px rgba(0,0,0,.1);max-width:300px}.current-chord{text-align:center;margin-right:auto}.next-chord{text-align:center;margin-left:auto}.chord-box img{width:250px;height:auto;margin-top:0}.chord-box h3{margin-top:2px;margin-bottom:2px;padding:0}.metronome{margin-top:20px}button{margin-top:10px}#app{font-family:Arial,sans-serif;text-align:center}.chord-display{margin-top:20px}