Update README.md

Signed-off-by: Jean-Francois Briere <jfbriere@gmail.com>

README.md

@@ -24,18 +24,16 @@
 <p align="center">
   There is a F-Droid alternate repository that allows updates for Squawker to be available faster than on the default F-Droid repository.
 </p>
-<div style="display: flex; align-items: center; justify-content: center">
-  <div style="float: left">
-    <img src="https://apkrep.creativaxion.org/fdroid/repo/index.png" width="80">
-  </div>
-  <div style="float: left; padding-left: 20px">
-    Scan the QR code or click this <a href="https://apkrep.creativaxion.org/fdroid/repo?fingerprint=443DA0A316DFB86BFD05D0123951855E7CD8724969FAD66D6E62EB801299744A">link</a> and process it with your F-Droid client. Here's the full link text for easy viewing:<br>
+<p align="left">
+  Scan the QR code below or click this <a href="https://apkrep.creativaxion.org/fdroid/repo?fingerprint=443DA0A316DFB86BFD05D0123951855E7CD8724969FAD66D6E62EB801299744A">link</a> and process it with your F-Droid client. Here's the full link text for easy viewing:<br>
     https://apkrep.creativaxion.org/fdroid/repo?fingerprint=443DA0A316DFB86BFD05D0123951855E7CD8724969FAD66D6E62EB801299744A
-  </div>
-</div>
+</p>
+<p align="left">
+  <img src="https://apkrep.creativaxion.org/fdroid/repo/index.png" width="80">
+</p>
 <p align="center">
- Important note: In case Squawker is already installed on your device and you want to reinstall it or want to install a version from another repository (from F-Droid to github or from F-Droid to the alternate F-Droid repository for instance), make sure to backup your application data (Settings/Data, click Export, select all items then click the save icon) and uninstall Squawker before proceeding.
-  After you have reinstalled Squawker from the new repository, import your backup.
+ <sub>Important note: In case Squawker is already installed on your device and you want to reinstall it or want to install a version from another repository (from F-Droid to github or from F-Droid to the alternate F-Droid repository for instance), make sure to backup your application data (Settings/Data, click Export, select all items then click the save icon) and uninstall Squawker before proceeding.
+  After you have reinstalled Squawker from the new repository, import your backup.</sub>
 </p>
 
 ## Features: