Styled book form and added an ux dropzone component.

templates/book/show.html.twig

@@ -21,7 +21,7 @@
         </tr>
         <tr>
             <th>Description</th>
-            <td>{{ book.description }}</td>
+            <td>{{ book.description | nl2br  }}</td>
         </tr>
         <tr>
             <th>Publisher</th>
@@ -39,7 +39,7 @@
         <tr>
             <th>Id</th>
             <th>File name</th>
-            <th>File size</th>
+            <th class="text-end">File size</th>
             <th>Extension</th>
             <th>Download</th>
             <th>Remove</th>
@@ -50,7 +50,7 @@
             <tr>
                 <td>{{ file.id }}</td>
                 <td>{{ file.fileName }}</td>
-                <td>{{ file.fileSize | bytes_format }}</td>
+                <td class="text-end">{{ file.fileSize | bytes_format }}</td>
                 <td>{{ file.extension }}</td>
                 <td><a href="{{ path('app_file_download', {id: file.id }) }}" class="link-secondary">download</a></td>
                 <td><a href="{{ path('app_file_delete', {id: file.id}) }}" class="link-danger">remove</a></td>