Blocks Widget Becomes Unaligned When Full Screen In Chrome

Hello,

I am using the blocks widget to display 6 blocks in two rows. In the Chrome browser the blocks widget displays correctly when windowed but when fullscreen it becomes unaligned. However it displays correctly in Firefox while windowed or fullscreen. Is there an easy way to fix this or would this need to be fixed in an theme update?

Thanks in advance. https://howtodrawthealphabet.com/

JJaneBingham