Table size and dimensions
You can set the size of a table by using either pixel or percentage dimensions. They can be switched if you activate px or %
.
With dimensions set in percentage, the width of your table will not be fixed - it would be set as a percentage of the text area width which may vary in different screen resolutions. By choosing to set dimensions in pixels, your table will have a fixed width which will not change on different screen resolutions.
Similarly, you may define column width as percentage from the table width or again in pixels. To set width for a particular column, click inside the column fill in the value in the Column Width field

When you set your column's width in % - make sure they add up to 100%.
When you use px, the sum of the px for each column should be equal to the width of the table in px.