diff --git a/man/column_spec.Rd b/man/column_spec.Rd
index 81986e4..efe653d 100644
--- a/man/column_spec.Rd
+++ b/man/column_spec.Rd
@@ -27,9 +27,19 @@
 \item{monospace}{A T/F value to control whether the text of the selected column
 need to be monospaced (verbatim)}
 
-\item{color}{A character string for column text color.}
+\item{color}{A character string for column text color. Here please pay
+attention to the differences in color codes between HTML and LaTeX.}
 
-\item{background}{A character string for column background color.}
+\item{background}{A character string for column background color. Here please
+pay attention to the differences in color codes between HTML and LaTeX.}
+
+\item{border_left}{A logical variable indicating whether there should be a
+border line on the left of the selected column. In HTML, you can also pass
+in a character string for the CSS of the border line}
+
+\item{border_right}{A logical variable indicating whether there should be a
+border line on the right of the selected column. In HTML, you can also pass
+in a character string for the CSS of the border line}
 }
 \description{
 This function allows users to select a column and then specify