I try to bring this into concern but Im not sure if it is feature requests or kind of bug.
When dragging the right bottom corner of the excerpt to change the size, word size change as well. Now when I click into it and changing the word size like from 20 to 16, but that 16 is not the same size with the 16 before changing the excerpt size. I hope there is a lock that i can remain the word size while changing the size of excerpt. Also the word size should be stiff defined, size 16 is always 16 no matter how you the excerpt size change.