Css adjustments to improve items list compatibility wiht Bootstrap 3.

src/admin/scss/_dropdown-and-autocomplete.scss

@@ -21,6 +21,7 @@
             padding: 6px 0px;
             border-radius: 0px !important;
             .dropdown-item {
+                display: block;
                 text-decoration: none;
                 padding: 0.375rem 1rem;
                 font-size: 0.8125rem;

src/admin/scss/_view-mode-cards.scss

@@ -104,6 +104,7 @@
 
         .media {
             width: 100%;
+            display: flex;
 
             .list-metadata {
                 padding: 0.75rem 1.375rem;

src/admin/scss/_view-mode-records.scss

@@ -103,6 +103,7 @@
 
         .media {
             width: 100%;
+            display: flex;
 
             .list-metadata {
                 padding: 25px;