[CST-5270] use bootstrap classes

src/app/submission/sections/sherpa-policies/section-sherpa-policies.component.html

@@ -1,7 +1,7 @@
 <ds-alert [type]="'alert-info'" *ngIf="hasNoData()" [content]="'submission.sections.sherpa-policy.title-empty'">
 </ds-alert>
 
-<div *ngIf="!hasNoData()" class="refresh-container mt-2 mb-2">
+<div *ngIf="!hasNoData()" class="d-flex justify-content-end mt-2 mb-2">
     <button type="button" class="btn btn-secondary pull-right" (click)="refresh()">
         <span><i class="fas fa-sync"></i> {{'submission.sections.sherpa.publisher.policy.refresh' | translate}} </span>
     </button>

src/app/submission/sections/sherpa-policies/section-sherpa-policies.component.scss

@@ -1,4 +0,0 @@
-.refresh-container {
-    display: flex;
-    justify-content: right;
-}