As I am not a coder, please forgive my observation if it is not relevant.

I am not sure what you expect as a change when you reduce screen size as you have set your position of the block at a fixed value in the css.
For example for your left block you have fixed the position from the left at 92px, and for the right block at 1488px from the left.

When I view it full res (1920x1080) the left block outline is 147px from the left and the right block is 1543px from the left (I guess the 55px difference is the hidden block background - as seen by the overlap of your centre panel by the right hand block).

As I reduce the screen size the two blocks stay in the same place relative to the left (which is as it should be - you fixed their position) with the right block eventually disappearing off the screen and the centre panel moving behind the left block as the centre panel balances on the smaller screen and the left block staying in its fixed position.

I cannot see how you can have the blocks change their size or position if you have fixed them in the css, and I do not know what you need in the css to make them variable to balance for different screen sizes (if that is even possible).

Although does not offer a solution - I hope it makes sense ;).

Hi,

my guess:
the template you are using has a fixed width or if the template uses percentual values the summary is greater than 100%.

Say your template uses a width of 200px for the menu and 600px for the content you have a total width of 800 px.
Now you have added your sidebar with a width of 8%.
When you visit  your site with a resolution set to 800px width the gallery itself matches to this resolution.
But where to put the ad-sidebar ?
8% from 800px = 64px - in my example you have a total width of 864px.
Either you now have horizontal scrollbars or an overlapping of the sidebar.

You can try to align your block to the right with 'float:right' :
http://www.w3schools.com/css/css_float.asp

If this does not work - i think you need to modify the css file(s) of the template you use.

Hope that helps

Cheers
Ralf

This seems to work down to a screen width of 1275px - any smaller and your left hand panel starts to disappear off the screen to the left.

Other than that it does look a lot better ;)

I saw @pewe, but dont know how to solve this problem!

Any idea?

Ok thx ;)