The vertical alignment property style:vertical-align is used to specify the vertical alignment of text in a table cell.

The options for the vertical alignment property are as follows:

• top-Aligns text vertically with the top of the cell.
• middle-Aligns text vertically with the middle of the cell.
• bottom-Aligns text vertically with the bottom of the cell.
• automatic-The application decide how to align the text.

the expected behavior in the text is:

• the text in the first cell line one has top alignment.
• the text in the second cell line one has middle alignment.
• the text in the third cell line one has bottom alignment.
• the text in the fourth cell line one has automatic alignment.

mistakes in specification 15.11 Table Cell Formatting Properties: the properties about table cell should be contained in style:table-cell-properties instead of style:table-column-properties.