Template manager in "Appearance" tab allows to modify "Sidebar witdh" set by deafault to 400px. I need to change sidebar elements height.
Which php file do I change and which positions to achieve it?

Can I just check why you need to change the height?

As it would have implications for different devices

Cheers
Paul

The elements are just too high for me. I have a 1980x1200 monitor and in spite of the fact don't see all menu items in opening screen. Have to scroll down to see the rest. So an average user using smaller resolution will just see more or less a half of the all menu items.

Rather than the height - how about trying to adjust the padding of the link elements?

#sidebar a, #sidebar span.separator {padding: 10px 0;}

Cheers
Paul

I have changed this in "theme-uncompressed.css" file:

#sidebar a, #sidebar span.separator {
color:#333;
min-width:100%;
float:left;
text-align:center;
display:inline-block;
padding:15px 0; /* it was 30px before */
color:#081202;
font-weight:600;
text-transform:uppercase;
margin:0 20px 0px 0;
}

Unfortunaltely menu has not changed at all. I reloaded the page, tried other browsers etc. Do you have any idea why...?

Have you tried adding to the custom.css?

Cheers
Paul