Added some space below the button.

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/journal-entities/item-pages/journal-issue/journal-issue.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/entity-groups/journal-entities/item-pages/journal-volume/journal-volume.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/journal-entities/item-pages/journal-volume/journal-volume.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/journal-entities/item-pages/journal/journal.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/entity-groups/research-entities/item-pages/org-unit/org-unit.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/research-entities/item-pages/org-unit/org-unit.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/entity-groups/research-entities/item-pages/person/person.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/research-entities/item-pages/person/person.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/entity-groups/research-entities/item-pages/project/project.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/entity-groups/research-entities/item-pages/project/project.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/item-page/simple/item-types/publication/publication.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/item-page/simple/item-types/publication/publication.component.scss

@@ -1 +1,5 @@
 @import '../../../../../styles/variables.scss';
+
+button.back-btn {
+  margin-bottom: 10px;
+}

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.html

@@ -1,6 +1,6 @@
 <div class="row" *ngIf="showBackButton | async" (click)="back()">
   <div class="col-12">
-    <button class="btn btn-secondary ng-tns-c242-28" >
+    <button class="btn btn-secondary back-btn ng-tns-c242-28" >
       <i _ngcontent-dspace-angular-c242="" class="fas fa-arrow-left ng-tns-c242-3"></i>
       {{"search-browse-item-return" | translate}}</button>
   </div>

src/app/item-page/simple/item-types/untyped-item/untyped-item.component.scss

@@ -1 +1,4 @@
 @import '../../../../../styles/variables.scss';
+button.back-btn {
+  margin-bottom: 10px;
+}