<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path stroke-linecap="round" stroke-linejoin="round" d="M21 7.5V18M15 7.5V18M3 16.811V8.69c0-.864.933-1.406 1.683-.977l7.108 4.061a1.125 1.125 0 0 1 0 1.954l-7.108 4.061A1.125 1.125 0 0 1 3 16.811"/></svg>