Issue title: Make Responsive Chart using ChartJS (for Mobile Phones)
 Issue body: There is a ChartJS canvas area and I've created the plugin text in the chart area. I want to make a chart as responsive to use mobile and pc. When I deploy my web page on the web browser, and If I do a zoom on my web page, the chart (ChartJS) can not be changed responsively. I want to use ChartJS intended for mobile phones and pc. For rending PC as well, in order to test when I zooming bigger on a web browser; the chart looks as though it is stuck in a tiny space. How can I overcome this problem? My HTML rendering tool is W3.

Sample My Chart:

[My CodePen ChartJS](https://codepen.io/jajarodriguez/pen/rNavdpW)
 Comments: 
 Comment 0: https://www.chartjs.org/docs/latest/general/responsive.html
{'source': 'GithubIssues', 'repo_name_with_owner': 'chartjs/Chart.js', 'issue_id': 548442070, 'repo_stars': 58647.0}