Indexhibit Support

Dear all,
I am aware that this is not the place to learn html, but i just can't make it work. Any change I make in the indexhibit->admin-> assets->template->style.css does not change anything at all.

i guess that the changes to fonts, font size, font families and line spacing need to be made here:

body {
font-size: 16px;
font-family: 'Helvetica Neue', Arial, Helvetica, Verdana, sans-serif;
background: #fff;
color: #000;
line-height: 1.9em;
/* font-weight: 300; */
}

Am I wrong? if yes, I would appreciate if somebody could point at the command line I have to change.

In addition, the spacing of the lines of the expanding menu is just too small. Where can I widen it?

Sorry, but I don't know what I'm messing up.

Thanks!

site: insideimages.eu

Update:
Making progress and managed to edit the style sheet as I wish. Now it looks like this:

body {
    font-size: 16px;
    font-family: georgia, sans-serif;
/*'Helvetica Neue', Arial, Helvetica, Verdana, sans-serif; */
    background: #fff;
    color: #000;
    line-height: 1.4em;
    /* font-weight: 300; */
}

Also the spacing in the expanding menus is ok now.

But:

where to I change the size of the expanding menus?

Sorry for being a nuisance.

Update:

successfully edited the heading styles and they work now!
Very happy.

What I am still missing is the font size and the spacing of the expanding menus.

But I'm sure I will come across other issues at some stage! :-)
Thanks anyway!

I also managed to indent the expanding submenus.
The affected style sheet is base.css

and the command line is

/* exhibit titles */
#index ul.section li.exhibit_title {
padding-left: 15px;
}

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