body { font-family: monospace; }
#sofa-tennis { color: #00ff00; background-color: #000; padding: 20px; border-radius: 10px; font-size: 16px; }
.matrix-box { border: 1px solid #0f0; padding: 10px; margin-top: 10px; background: rgba(0,255,0,0.05); }
.highlight { color: #0f0; font-weight: bold; }