How it works this library?

Here the site slogan appears on the letters, and the script here

But I can not understand how the script catches the text and gives this effect. Wanted to deliver.
July 9th 19 at 10:40
1 answer
July 9th 19 at 10:42
Someday you will learn to use the search, but that's another story..
=) - Ellie.Mitchell commented on July 9th 19 at 10:45

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