Hello,
I would like an 'empty' button at the right end of the page menu bar which fills the page horizontally 100%.

To explain, here is how it looks now:


I tried adding a background attribute to:
echo '<div id="menu1" style="background: #EEEEEE;">';

in bfa_header_config, but then ofcourse the white space between the buttons is gone:



Tried solving that with adding a white border to the buttons on the right side, but because of the space between the buttons this doesn't look nice:




I am sure that what i'm doing is not very 'neat'. But it was getting very late and I was desperately looking for a quick solution. Hopefully some of you came up with, probably a much easier, solution.

Thank you so much in advance.

Why not also add a margin-right of 0 along with the border-right?

That doesn't change anything. Margin is already set to 0 in that part of the css.
div#menu1 ul.rMenu li a:link,
div#menu1 ul.rMenu li a:hover,
div#menu1 ul.rMenu li a:visited,
div#menu1 ul.rMenu li a:active {
border-right: 2px solid white;
text-decoration: none;
margin: 0;
color: #<?php echo $bfa_ata['page_menu_bar_link_color']; ?>;
text-transform: <?php echo $bfa_ata['page_menu_transform']; ?>;
font: <?php echo $bfa_ata['page_menu_font']; ?>;


Margin or padding or spacing must be arranged somewhere else but I can't find where...

Take a look in ATO>Add HTML/CSS Inserts>CSS Inserts for items relating to menus. You may get some clues there.

Thanks so much, that's exactly where to find the issue.

Changed the following:

/* Space between items of page menu bar */
div#menu1 ul.rMenu li {
margin-right: 0px;

(was set to 5px)

So does the right border CSS work OK for you now?

Yes,

With:
- Changing the background of the menu div in bfa_header_config
- Adding a right border in css.php
- Removing the right margin through ATO>Add HTML/CSS Inserts

Thanks again.

You shouldn't add CSS code to css.php or edit bfa_header_config. All of those menu changes can be done within the theme options. Besides the problem unknown issues when changing those files they will be overwritten when you upgrade Atahualpa.