Angular7: ngx-graph container size doesn't fit with "real" container size

here's my problem: Website. I created the website with a grid layout. On the top left grid I want to use ngx-graph. In the code CSS code for the container I set the container size to 100% of the grid, which I can also see in the Google Chrome tools (1). But the problem is, that the graph still gets cut off as you can see in 1.

I tried playing with the css attributes, but I don't think, that the css is the problem.

Does anybody have an idea, how to solve that problem?