Checkbox type looks funny on pages with field structures, but OK on table structures

[pakricard]

Hi all:

The checkbox type we use in CSS looks funny in some CSS themes. Could not check them all but:

Theme gel:

Theme aguapop:

Theme professional:

As fas as my eyesight allows, it looks like the traditional checkbox has got some sliders, as if it was a long text field.

Functionality is good (if your pulse is good enough to get to the top-left corner) ;-)

[pakricard]

More to it, this behaviour only happens in pages with field structures, but on old style pages with tables, the checkbox looks OK.

Old style script with table structures:

New script with field structures:

in both cases: type="checkbox"

Any idea why?