legend: { orient: 'horizontal', // 'vertical' x: 'right', // 'center' | 'left' | {number}, y: 'top', // 'center' | 'bottom' | {number} backgroundColor: '#fff', borderColor: 'rgba(178,34,34,0.8)', borderWidth: 4, padding: 10, // [5, 10, 15, 20] itemGa