Rahul's space

You can use [attr=val] selector

 img[src=“”]{display: none;}

The above selector will simply match, if the src attribute has no value.

Alternatively, if you want to reserve the space taken by img tag, you might like to use 
visibility: hidden; instead of display: none; 
as display: none; will simply mess your layout 
where visibility: hidden; will reserve the space, it will just hide the img.

Enjoy Demo:

Demo

 
Hope this help !