Large gap between components of EEG viewer

[cbrnr]

The gap (vertical distance) between the two components of the EEG viewer (signal browser and overview bar) is too large on my machine:

I started the viewer with panel serve workflow_eeg-viewer.ipynb --show. Here's the output of import holoviews as hv; hv.extension("bokeh"); hv.show_versions():

Python              :  3.9.16 | packaged by conda-forge | (main, Feb  1 2023, 21:38:11) 
[Clang 14.0.6 ]
Operating system    :  macOS-13.4.1-arm64-arm-64bit
holoviews           :  1.16.2

IPython             :  8.14.0
bokeh               :  3.2.0
colorcet            :  3.0.1
cudf                :  -
dask                :  2023.7.0
datashader          :  0.15.1
geoviews            :  -
hvplot              :  0.8.4
ibis                :  -
jupyter_bokeh       :  -
jupyterlab          :  4.0.3
matplotlib          :  3.7.2
networkx            :  3.1
notebook            :  7.0.0
numba               :  0.57.1
numpy               :  1.24.4
pandas              :  2.0.3
panel               :  1.2.0
param               :  1.13.0
pillow              :  -
plotly              :  -
pyarrow             :  -
scipy               :  1.11.1
skimage             :  0.21.0
spatialpandas       :  -
streamz             :  -
xarray              :  2023.7.0