3G PhoneGap application increases to almost 220MB. Could you explain?

I'm developing my first PhoneGap application for Android and I come across something that scared me a lot. The application, which until now has only interface, no business rule has increased its size drastically. Initially it was only 3mb, however, I only favored uploading the application to Bitbucket of the company (git) and when I emulated the same then became absurd. from 3mb went to 220mb. They would know what it could be, remembering that the application has no business rules operating, only 4 screens created with html5, js and css.

Thank you in advance.