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README.md

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-# Technetium
-An approach to taming the new Firefox's Photon design
+# What is Technetium?
+An approach to taming the new Firefox 89+'s Photon design - icons included
+
+It gets its name from Technetium-99m, agent used for [Single Photon Emission Computed Tomography](https://en.wikipedia.org/wiki/Single-photon_emission_computed_tomography)
+
+
+### What has been changed?
+- Icons have been reintroduced, in a smaller menu
+- Compact mode has been re-enabled
+- Close-tab icon is always displayed, regardless of the number of open tabs 
+- I wish to thank the [Lepton](https://github.com/black7375/Firefox-UI-Fix)'s developer, whose work served as a base for my less radical restyling
+
+
+### How to apply Technetium to your Firefox?
+-  Enter `about:support` in your URL bar
+-  Find the `Profile Directory` entry and click the `Open Directory` button
+-  Copy in that folder the `user.js` file and the `chrome folder` from the Technetium release package
+-  In `about:support`, click `Clear startup cache...`
+
+## Screenshots
+
+![screenshot](https://user-images.githubusercontent.com/16632292/122074400-79444480-cdf9-11eb-8137-21b7991451c6.png)
+
+![screenshot 2](https://user-images.githubusercontent.com/16632292/122074886-e3f58000-cdf9-11eb-8fd8-6c07b23ddac7.png)
+
+
+### Bugs and Feedback
+Please don't hesitate to fill in a bug report if something seems not to be working as expected, or you have any piece of advice