Javascript, CSS & HTML Programming Professional

I am looking for a professional with expertise in Javascript, CSS, and HTML programming.

https://github.com/mleibman/SlickGrid

I've found a couple of examples that I'm fond of for modifying code to make several different tables with different features (and CSS) as well as a checkbox list box.

SlickGrid-master/examples/example3a-compound-editors.html
SlickGrid-master/examples/example3-editing.html
SlickGrid-master/examples/example3b-editing-with-undo.html
SlickGrid-master/examples/example5-collapsing.html
SlickGrid-master/examples/example-checkbox-row-select.html
SlickGrid-master/examples/example-colspan.html
SlickGrid-master/examples/example-header-row.html
SlickGrid-master/examples/example-multi-column-sort.html
SlickGrid-master/examples/example-optimizing-dataview.html
SlickGrid-master/examples/example-totals-via-data-provider.html

For modifying these empty pages for design features

https://tetsals.pathfindershirtsllc.store/report.php

https://tetsals.pathfindershirtsllc.store/invoice.php