style: add shadow under breadcrumb

src/app/app.component.scss

@@ -64,6 +64,8 @@ dlcm-main-toolbar-desktop-vertical {
   background-color: $background-grey;
   display: flex;
   justify-content: center;
+  box-shadow: 0 8px 10px -4px #5858582e;
+  z-index: $z-index-breadcrumb;
 
   .breadcrumb {
     max-width: $grid-width;

src/app/features/home/components/presentationals/home-browsing-org-unit/home-browsing-org-unit.presentational.scss

@@ -7,7 +7,6 @@ $padding-vertical: 10px;
 :host {
   position: relative;
   background-color: $background-grey;
-  box-shadow: inset 0px 10px 20px 0px rgba(230, 230, 230, 0.75);
   flex: 1;
   display: flex;
   flex-direction: column;

src/sass/abstracts/_variables.scss

@@ -31,3 +31,5 @@ $breadcrumb-height: 38px;
 $footer-height: 40px;
 
 $size-status-history-button: 20px;
+
+$z-index-breadcrumb: 1;