There's no container to delineate columns. Note that if you use percentages, your table will be automatically resized if the window size changes, retaining proportional relationships among its contents. This enables a number of interesting and useful effects, such as vertical centering , described below. This attribute controls the dimensions of the lines that separate cells in the table. These attributes set alignment for a single cell or an entire row.
Possible values are top , bottom , left , right , center .
By default the content of any table cell is laterally aligned on the left and vertically aligned in the center. Note, however, that the size of table elements can be problematic. You don't always get what you ask for, especially if you rely on relative measures like percentages. But there are ways to fix dimensions for table elements, as discussed below. This technique gives you a way to effectively set a local background color for a region of your page.