visualise-importance-of-table-headers.user.css

/* ==UserStyle==
@name           Visualise importance of table headers
@namespace      github.com/openstyles/stylus
@version        1.0.0
@description    This hides all table cells except table headers and when hovering over a table cell. That helps visualise the importance of table headers when table cells can only be viewed in the context of table headers but not other table cells.
@license        MIT
@author         Anika Henke
==/UserStyle== */

td {
  background-color: #ccc !important;
  color: #ccc !important;
}

td:hover {
  background-color: #eee !important;
  color: #333 !important;
}