CSS stripping code from block?

Hi Mehrpadin,

Still loving your theme! But, have a small issue. I am adding CSS code in the blocks for secondary icon menus. Everything works very well except that when I click to re-configure the block (for any reason, usually a small code edit), the

code for the links is stripped away and in its place is a non-breaking space ("&nbsp"), so that the line that looked like this:

now looks like this:

.

My HTML input is set correctly and the rest of the CSS is untouched. Any ideas?

Thanks very much and if this is an obvious noobe mistake, my apologies in advance,
Lynne