Block: Style options

You may optionally specify a field by which to group the records. Leave blank to not group.
If enabled the rendered output of the grouping field is used to group the rows.
The class to provide on each row. You may use field tokens from as per the "Replacement patterns" used in "Rewrite the output of this field" for all fields.
Add the default row classes like views-row-1 to the output. You can use this to quickly reduce the amount of markup the view provides by default, at the cost of making it more difficult to apply CSS.
Add css classes to the first and last line, as well as odd/even classes for striping.