Styling pass for scrollbars, fieldsets, and scroll shadows

styles/less/sheets/actors/environment/features.less

@@ -0,0 +1,28 @@
+@import '../../../utils/colors.less';
+@import '../../../utils/fonts.less';
+@import '../../../utils/mixin.less';
+
+.application.sheet.daggerheart.actor.dh-style.environment {
+    .tab.features {
+        position: relative;
+        .feature-section {
+            display: flex;
+            flex-direction: column;
+            gap: 10px;
+            overflow-y: auto;
+            padding: 4px 8px;
+            scrollbar-gutter: stable;
+            .with-scroll-shadows();
+        }
+        > button {
+            --button-size: 1.75rem;
+            width: 1.75rem;
+            position: absolute;
+            inset: auto 16px 0 auto;
+            box-shadow: 0 0 5px @light-black;
+        }
+        &:has(> button) .feature-section {
+            padding-bottom: calc(1px + 1.75rem);
+        }
+    }
+}