Here's a 4 columns block.
Now let's add a perfectly proportioned French flag:
C'est neat, non ?
Here's what's left (8 columns) without me having to specify it. I divide it into two halves:
First half, a Youtube video
Second half, another flag!
What about das Grid?
No need for horizontal stripes
Left-hand side col: one half.
Our new take on the French flag: one colour per column.
Left-hand side col: one fourth too.
Let's paint this last column black.