To access your web page for editing:
1. Go to Content > Content Management System
2. Hover over your website, and click Manage Website
3. Click the Content Management tab
4. Click the Folder view
5. Find your webpage and click on it
6. Click on the Content tab

To format the table cells of your table:
1. Double-click on the outer edge of your table to bring up the Table editor window
2. In the Table Designer area of the Table screen, click in one of the cells to highlight it
3. In the Cell Properties area of the Table screen, enter the width that you want the cell to be
4. Click a cell in the next column
5. Enter the width that you want the cell to be

Continue this process until you have set all the cell widths, and click OK to finish.