The comparative in comparison can be emphasized on two ways.
By repetition:
Examples of the emphasized comparative by repetition.
The days became shorter and shorter during a winter.
Flying is getting more and more common.
Smoking cigarettes is less and less important to yousters.

The Comparative and The Superlative
End using far, still, much, so much, a great deal, a big deal.
Examples of the emphasized comparative
It’s much better to stay at home than to go outside and dine.
It’s much wormer today, than yesterday.
New house is far more better than older one.
Old car is still better designed than new one.
The Superlative
The Superlative is emphasized with very and by far.
Examples of the emphasized superlative
This is the very lowest offer for this TV.
I found it on the very next street.
This is by far the best thing ever.
FC Red Star is by far the best football club.
Also we can emphasized superlative with possible and imaginable after a noun qualified by the superlative.
Examples of the emphasized superlative
In my opinion it’s the greatest happiness possible.
We had the least difficulty imaginable.
She is the greatest pearson imaginable.
His car is the ugliest thing possible.