Kibana canvas change column width

[Catherine_Liu]

@Carlos_Fernando_Palm Using the default table element in Canvas as an example, I was able to set a fixed width for the first column using the following CSS.

Expression:

filters
| demodata
| table
| render 
  css=".canvasDataTable__table {
  table-layout: fixed;
  width:100%
}

.canvasDataTable__table th:first-child  {
  width: 185px; 
}"