Sandbox
This is a "warning1"...
You need to have a fair amount of text,
or you won't be able to see the warning sign...
because it is scaled to the size of the thing it covers.
This can be difficult sometimes ....
This is a "warning2"...
It's a bit smaller to see what happens.
Sooner or later it gets too small for the warning sign to be visible.
This is a "warning3"...
This one is definitely too small.