IPython/Jupyter Notebook enlarge/change cell width

ipython_notebook_large_width.py

from IPython.display import display, HTML

display(HTML(data="""
<style>
    div#notebook-container    { width: 95%; }
    div#menubar-container     { width: 65%; }
    div#maintoolbar-container { width: 99%; }
</style>
"""))

But here is the other question: how do you extend the default height of a cell so that you don't get the scrollbar on the right side (so you can see an entire chart, for example, that you want to make fairly large).

Same question. How do you adjust height, e.g., setting a specific pixel count?

@kauttoj should be CSS: height: Kpx;, for K in real numbers.

Thank you so much

Please forgive my naivete, but how and where does one execute:
from IPython.display import display, HTML

display(HTML(data="""

<style> div#notebook-container { width: 95%; } div#menubar-container { width: 65%; } div#maintoolbar-container { width: 99%; } </style>

"""))
??