Fixed features tab scrolling

styles/less/sheets/actors/npc/features.less

@@ -0,0 +1,18 @@
+.application.sheet.daggerheart.actor.dh-style.npc {
+    .tab.features {
+        &.active {
+            overflow: hidden;
+            display: flex;
+            flex-direction: column;
+        }
+
+        .feature-section {
+            display: flex;
+            flex-direction: column;
+            gap: 10px;
+            overflow-y: auto;
+            mask-image: linear-gradient(0deg, transparent 0%, black 5%);
+            padding-bottom: 20px;
+        }
+    }
+}

styles/less/sheets/actors/npc/index.less

@@ -1,2 +1,3 @@
 @import './sheet.less';
-@import './header.less';
+@import './header.less';
+@import './features.less';