Using Bootstrap 4 md-3 class for bottom margin instead of hardcoding 1em

src/app/shared/comcol-page-logo/comcol-page-logo.component.html

-<div *ngIf="logo" class="dso-logo">
+<div *ngIf="logo" class="dso-logo mb-3">
     <img [src]="logo.content" class="img-fluid" [attr.alt]="alternateText ? alternateText : null" (error)="errorHandler($event)"/>
 </div>

src/app/shared/comcol-page-logo/comcol-page-logo.component.scss

 @import '../../../styles/variables.scss';
-
-.dso-logo {
-  padding-bottom: 1em;
-}