<html> <head> <link href="/css/c3.css" rel="stylesheet" type="text/css"> </head> <body> <div id="chart"></div> <script src="http://d3js.org/d3.v5.min.js" charset="utf-8"></script> <script src="/js/c3.js"></script> <script> var chart = c3.generate({ data: { columns: [ ['data1', 1030, 1200, 1100, 1400, 1150, 1250], ['data2', 2130, 2100, 2140, 2200, 2150, 1850] ], type: 'area', }, area: { zerobased: false } }); </script> </body> </html>