I have noticed that when you search an post on the Blog the size and the Design automatically changes. The problem is that I can't find the actual design settings so I can give the right size and the right colors of the Blog but when I check it on the "Preview mode" everything is fine. Please check out the photos.
This is the one that looks correct and without searching for anything.
And this is the wrong one that the size isn't correct and also the design.