Documentation:
TablePress Styler

Horizontal Alignment

Here you can set the horizontal alignment for the table header, footer and row header.

Vertical Alignment

Here you can set the vertical alignment for the table header, footer and row header.

Padding

Here you can set the padding for the table header, footer and row header.

Background Color

Here you can set the background color for the table header, footer and row header.

Font Styles

Here you can set font styles for the table header, footer and row header.

See here for more details.