app/views/partials/_stylesheets.html.erb
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/flatpickr@4.6.13/dist/themes/material_blue.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/tabulator-tables@6.2.1/dist/css/tabulator.min.css">