problem with columns (%)

I am trying to put the width of the columns in procent but the grid does not look right.What can i do

You can only specify the column width in absolute numbers, percentages do not work, sorry.

Percentages almost work.

<style>
.active-column-0 { width: 20% }
.active-column-1 { width: 20% }
.active-column-2 { width: 60% }
</style>

The columns are slightly off from the headers. However, clicking on the line between the column header 0 and column header 1 readjusts the line between column 0 and column 1. Then clicking on the line between column header 1 and column header 2 readjusts the line between column 1 and column 2...

Of course you don't want to have to do this manually every time. However, it suggests that it should be possible to make percentages work if you only knew what functions were invoked by those clicks...