align new submission button with upload drop zone

src/app/shared/uploader/uploader.component.html

@@ -18,7 +18,7 @@
          [uploader]="uploader"
          (fileOver)="fileOverBase($event)"
          class="well ds-base-drop-zone mt-1 mb-3 text-muted">
-      <p class="text-center m-0 pt-2" [hidden]="uploader?.queue?.length !== 0">
+      <p class="text-center m-0 p-0 d-flex justify-content-center align-items-center" *ngIf="uploader?.queue?.length === 0">
         <span><i class="fas fa-cloud-upload" aria-hidden="true"></i> {{dropMsg | translate}} {{'uploader.or' | translate}}
           <label class="btn btn-link m-0 p-0">
             <input class="d-none" type="file" ng2FileSelect [uploader]="uploader" multiple  />

src/styles/_custom_variables.scss

@@ -5,7 +5,7 @@ $button-height: $input-btn-padding-y * 2 + $input-btn-line-height + calculateRem
 $card-height-percentage:98%;
 $card-thumbnail-height:240px;
 $dropdown-menu-max-height: 200px;
-$drop-zone-area-height: 42px;
+$drop-zone-area-height: 44px;
 $drop-zone-area-z-index: 1025;
 $drop-zone-area-inner-z-index: 1021;
 $login-logo-height:72px;