Task/improve no activities info component (#7857)

* Various improvements

* Update changelog

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Improved the style of the activity type filter on the activities page (experimental)
+- Improved the style of the no activities info component
 - Improved the style of the selector in the benchmark comparator
 - Improved the language localization for German (`de`)
 - Upgraded `papaparse` from version `5.5.3` to `5.7.0`

libs/ui/src/lib/no-activities-info/no-activities-info.component.html

@@ -2,12 +2,14 @@
   <div class="d-flex justify-content-center mb-1">
     <gf-logo size="large" [showLabel]="false" />
   </div>
-  <a
-    class="align-items-center justify-content-center"
-    color="primary"
-    mat-button
-    [routerLink]="routerLinkPortfolioActivitiesCreate"
-  >
-    <span i18n>Time to add your first activity.</span>
-  </a>
+  <div class="d-flex justify-content-center">
+    <a
+      class="align-items-center d-inline-flex justify-content-center"
+      color="primary"
+      mat-button
+      [routerLink]="routerLinkPortfolioActivitiesCreate"
+    >
+      <span i18n>Add your first activity</span>
+    </a>
+  </div>
 </div>