Webgl canvas bug when browser size increases

[leehwmj]

I have encountered the following bug in every webgl graph I have created:

I can not change the size of the canvas manually, so I ask to get a method.

[khawarizmus]

@leehwmj adjust the size of the canvas by css

[leehwmj]

@gimyboya I have tried that. but the result is not good like this

I do not know and have no idea how should I fix the problem...