The graphs displayed here are Highcharts which I've found are well documented, well used (by microsoft, facebook, mastercard to name a few) and work well with bootstrap (full responsive). Also fairly importantly the graphs have a wide range and can be tweaked to do exactly what you want.
More examples can be shown on their site at High charts demos or ( https://www.highcharts.com/demo )

All you need to add to your environment is the link to your downloaded highcharts js file. Usually highcharts/code/highcharts.js.. depending on where you put it.
bare in mind that though for personal ie non commercial use highcharts is free, there is a licencing cost to use it. more info here
If you were using say REACT you might decide to use ReCharts however so far I've found highcharts to an a more extensive library of charts and if you go to the site you may notice the lack of responsiveness.
but again its down to what you need and whats the best fit for the product.