add node-grid class

src/assets/scss/app.scss

@@ -5,6 +5,7 @@
 @import 'base/root';
 
 @import 'base/bootstrap-overrides';
+@import 'classes/nodes-grid';
 @import 'classes/misc';
 
 @import 'fonts/noto-sans';

src/assets/scss/classes/_nodes-grid.scss

@@ -0,0 +1,22 @@
+.nodes-grid {
+  display: grid;
+  grid-gap: 2.2rem;
+  grid-template-columns: 1fr;
+  grid-template-rows: auto;
+
+  @include media-breakpoint-up(lg) {
+    grid-gap: 3.4rem;
+  }
+
+  @media (min-width: 650px) {
+    grid-template-columns: repeat(2, 1fr);
+  }
+
+  @include media-breakpoint-up(lg) {
+    grid-template-columns: repeat(3, 1fr);
+  }
+
+  @include media-breakpoint-up(xxl) {
+    grid-template-columns: repeat(4, 1fr);
+  }
+}