tweaked action-menu offset

src/mol-plugin-ui/controls/action-menu.tsx

@@ -66,18 +66,20 @@ export namespace ActionMenu {
             const { header, items, onSelect } = this.props;
             if (typeof items === 'string') return null;
             if (isItem(items)) return <Action item={items} onSelect={onSelect} />
-            return <div className='msp-control-offset'>
+            return <div>
                 {header && <div className='msp-control-group-header'>
                     <button className='msp-btn msp-btn-block' onClick={this.toggleExpanded}>
                         <span className={`msp-icon msp-icon-${this.state.isExpanded ? 'collapse' : 'expand'}`} />
                         {header}
                     </button>
                 </div>}
+                <div className='msp-control-offset'>
                     {(!header || this.state.isExpanded) && items.map((x, i) => {
                         if (typeof x === 'string') return null;
                         if (isItem(x)) return <Action key={i} item={x} onSelect={onSelect} />
                         return <Section key={i} header={typeof x[0] === 'string' ? x[0] : void 0} items={x} onSelect={onSelect} />
                     })}
+                </div>
             </div>;
         }
     }