The search button touches or overlaps the download section of the widget

[matrs]

Describe the bug
The search button touches or overlaps the download section of the widget. It doesn't matter how wide the window containing the widget is.

To Reproduce
Run any example in the jupyter notebook/jupyterlab or open an html that contains a clustergrammer2 widget

Screenshots
Examples in chrome (Firefox also has this problem):
Codex data , voila application:

Your introduction_lab.html

jupyterlab, CCLE example:

Desktop (please complete the following information):

• OS: Linux 5.7.9-1-MANJARO
• Google Chrome 84.0.4147.105

$ pip search clustergrammer2
clustergrammer2 (0.15.0)  - A custom Jupyter widget library built using the widget-ts-cookiecutter library
  INSTALLED: 0.15.0 (latest)
$ jupyter-labextension list
clustergrammer2 v0.15.0  enabled  OK