Can't move header blue block to container

Hi!

I don't understand why I can't move Header Blue block to new container. Here is screen record: https://www.dropbox.com/s/y3mnmx3qr4ecl7l/ezgif-2-37bc27273ecb.gif?dl=0

Thanks.

Simple. Blocks cannot be placed inside containers. Blocks are not actually a part of official Bootstrap, but rather a special component unique to Bootstrap Studio. Just expand the Block in the overview, select all the components inside it, and drag them into your container (unless the block already contains a container, in which case you can just drag the container out of the block, and delete the Block component.)