Safari THead Issue

I'm not sure if this is an actual issue.

I'm using a .css file, and styling a table.

I'm using the tag thead.

I had two rows in thead.

I wanted to sort the table by column.

On sorting asc, make the border-top-style have a solid 1px #color.
On sorting desc, make the border-bottom-style solid 1px #color.

When you have two rows in thead, and sorting the first column on the second row,

Safari will give a border to the entire second row.

SOLUTION:

Remove the first row from head.