UI: Refactoring

ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.html

@@ -159,7 +159,7 @@
             </tb-rule-node-link>
           </tb-details-panel>
         </mat-drawer>
-        <mat-drawer-content class="tb-rulechain-graph-content" style="z-index: 0;">
+        <mat-drawer-content class="tb-rulechain-graph-content">
           <button color="primary"
                   mat-mini-fab
                   class="tb-library-node-btn"

ui-ngx/src/app/modules/home/pages/rulechain/rulechain-page.component.scss

@@ -173,6 +173,7 @@
   }
   .mat-drawer-content.tb-rulechain-graph-content {
     overflow: hidden;
+    z-index: 0;
     .tb-rulechain-graph {
       z-index: 0;
       overflow: auto;