Fix loading spinner z-index

frontend/src/app/lightning/channel/channel.component.scss

@@ -68,7 +68,7 @@ h3 {
 .loading-spinner {
   position: absolute;
   top: 400px;
-  z-index: 100;
+  z-index: 99;
   width: 100%;
   left: 0;
   @media (max-width: 767.98px) {

frontend/src/app/lightning/node-fee-chart/node-fee-chart.component.ts

@@ -16,7 +16,7 @@ import { StateService } from '../../services/state.service';
       position: absolute;
       top: 50%;
       left: calc(50% - 15px);
-      z-index: 100;
+      z-index: 99;
     }
   `],
 })

frontend/src/app/lightning/node-statistics-chart/node-statistics-chart.component.ts

@@ -19,7 +19,7 @@ import { StateService } from '../../services/state.service';
       position: absolute;
       top: 50%;
       left: calc(50% - 15px);
-      z-index: 100;
+      z-index: 99;
     }
   `],
 })

frontend/src/app/lightning/nodes-channels-map/nodes-channels-map.component.scss

@@ -102,7 +102,7 @@
   position: absolute;
   top: 50%;
   left: calc(50% - 15px);
-  z-index: 100;
+  z-index: 99;
   @media (max-width: 767.98px) {
     top: 550px;
   }
@@ -110,7 +110,7 @@
 .loading-spinner.widget {
   position: absolute;
   top: 200px;
-  z-index: 100;
+  z-index: 99;
   width: 100%;
   left: 0;
   @media (max-width: 767.98px) {
@@ -120,7 +120,7 @@
 .loading-spinner.nodepage {
   position: absolute;
   top: 200px;
-  z-index: 100;
+  z-index: 99;
   width: 100%;
   left: 0;
 }
@@ -128,7 +128,7 @@
 .loading-spinner.channelpage {
   position: absolute;
   top: 400px;
-  z-index: 100;
+  z-index: 99;
   width: 100%;
   left: 0;
   @media (max-width: 767.98px) {

frontend/src/app/lightning/nodes-channels/node-channels.component.scss

@@ -8,7 +8,7 @@
   left: 0;
   right: 0;
   width: 100%;
-  z-index: 100;
+  z-index: 99;
 }
 
 .spinner-border {

frontend/src/app/lightning/nodes-map/nodes-map.component.scss

@@ -68,7 +68,7 @@
   position: absolute;
   top: 50%;
   left: calc(50% - 15px);
-  z-index: 100;
+  z-index: 99;
   @media (max-width: 767.98px) {
     top: 550px;
   }

frontend/src/app/lightning/nodes-networks-chart/nodes-networks-chart.component.ts

@@ -22,7 +22,7 @@ import { StateService } from '../../services/state.service';
       position: absolute;
       top: 50%;
       left: calc(50% - 15px);
-      z-index: 100;
+      z-index: 99;
     }
   `],
   changeDetection: ChangeDetectionStrategy.OnPush,

frontend/src/app/lightning/nodes-per-isp-chart/nodes-per-isp-chart.component.scss

@@ -46,7 +46,7 @@
   position: absolute;
   top: 50%;
   left: calc(50% - 15px);
-  z-index: 100;
+  z-index: 99;
 }
 
 .pool-distribution {

frontend/src/app/lightning/statistics-chart/lightning-statistics-chart.component.ts

@@ -22,7 +22,7 @@ import { StateService } from '../../services/state.service';
       position: absolute;
       top: 50%;
       left: calc(50% - 15px);
-      z-index: 100;
+      z-index: 99;
     }
   `],
 })