chore(grid): explanations on width dimensions

Author: marin-bratanov

components/grid/columns/width.md

@@ -12,12 +12,18 @@ position: 4
 
 This article explains how the grid column width behaves depending on the settings applied by the developer.
 
+You can set the grid column `Width` parameter in any CSS unit, such as `px`, `%`, `vw`, `em`, `rem`. You can read more on how to set sizes in Telerik components in the [Dimensions]({%slug common-features/dimensions%}) article. You must, however, provide the unit so that the browser can understand it.
+
 With regard to the widths of its columns, the scrollable (default) Grid typically behaves as any regular HTML table with a `table-layout: fixed`.
 
 * When all column widths are explicitly set and the cumulative column width is greater than the available Grid width, a horizontal scrollbar appears and all set column widths are respected.
+
 * When all column widths are explicitly set and the cumulative column width is less than the available Grid width, the remaining width is distributed evenly between all columns.
+
 * When only some column widths are set and the cumulative width of the columns with set widths is greater than the available Grid width, a horizontal scrollbar appears and all set column widths are respected. Columns with no set width are invisible as their width is `0`.
+
 * When only some column widths are set and the cumulative width of columns with set widths is less than the available Grid width, the widths of the columns with a set width are respected and the remaining width is distributed evenly between the other columns.
+
 * When no column widths are set, the available width is distributed evenly between all Grid columns.
 
 # See Also

components/grid/export/excel.md

@@ -99,6 +99,8 @@ The Excel export has the following specifics:
 
 * Only columns that have a `Field` set are exported.
 
+* Excel does not understand units different than `px` for the column `Width`, and if you use them (such as `rem` or `%`), it will fail to parse them and will render a collapsed (hidden) column with zero width.
+
 * If you are using the `OnRead` event, only the current page of data will be exported, because that's all the grid has at the time of the export action.
 
 * With Server-side Blazor, the file may become larger than the default SignalR connection limit, and this can disconnect the client and result in an error. Generally, this requires quite a lot of data to happen, but you may need to increase the size limit of the connection in the `ConfigureServices` method of your `Startup.cs` file, for example: