Hi Andrey,

I think this post would be better in the "Editing" forum.

But... Two things...

If you are using Firefox, install the "Firebug" add-on. This will allow you to right click on things on your web page and "inspect element". You need to know a little html & css, but with a little trial and error you should be able to figure out what's what.

Within firebug you can click around on the html elements, and view the governing styles, view the layout dimensions, etc. This will tell you how wide those columns are.

But... you can also accomplish this by using the Content block to insert your images. Set the image width to a percentage and it will fit the image width as a percentage of the available space. This won't resize your images, so if you have very large file sizes, you should still reduce them, obviously.

Best of luck,
-Bob