Apply style to cells of first row
Solution 1:
Use tr:first-child to take the first tr:
.category_table tr:first-child td {
vertical-align: top;
}
If you have nested tables, and you don't want to apply styles to the inner rows, add some child selectors so only the top-level tds in the first top-level tr get the styles:
.category_table > tbody > tr:first-child > td {
vertical-align: top;
}
Solution 2:
This should do the work:
.category_table tr:first-child td {
vertical-align: top;
}