Dreamweaver, no matter which version, the default width of the insert table is 200px；; You need to adjust yourself, and then the td cells inside are evenly distributed (if the table width is 200, 5 columns, the width is 40px；; 10 column, that is, 20px, and so on), the mouse can drag the cell table box to resize.

The interval inside the attribute can also be adjusted by itself, 0~ infinity, shaping, and floating point numbers are not allowed.