Remove this margin

I’m trying to have my figure take up the full space of the canvas. or at least have it go to the bottom of the color bar i have been trying a bunch of stuff but I don’t know where that margin lives if its in the graph, figure, layout, or trace Im kinda stuck any help to point me in the right direction is appreciated

dcc.Graph(id=‘graph’, figure={‘layout’: {‘height’: 700,‘width’: 1000,}}),

fig = go.Figure(data=[go.Surface(x=x, y=y, z=z, colorbar_y=-0.07)])

fig.update_layout(title_text=“distance from z=0”,)#width=700, height=700, autoexpand=True)) margin=dict(l=65, r=50, b=65, t=90,)