Change Width's display status from "PERCENT" to "Pixels" representing the actual size, which avoids misal, OK caused by the window to rest, OK, and use the mouse to select the form in the web editing window, the property board is as follows:
This is the table property setting in the default state, and "Border", "Cellpad", "Cellspace" value is all set to 0.
The mouse is on the table interior point, then the property board has automatically switched to the cell's property setting window, set "BG" of the cell to "red" (for the final thin line color, free setting), "H" is set to "1", as shown
Click the "Show Code View" button on the left top of the editing window to enter the source code window, remove the code
In addition, you can control the length of the thin line by adjusting the "width" value of the table. Similar methods can also make a vertical thin line.