Better description of add + fix regression form validation + fix http server not using strokeWidth + add doc about hardcoded

src/Components/ElementsSidebar/ElementsSidebar.tsx

@@ -116,7 +116,7 @@ export const ElementsSidebar: React.FC<IElementsSidebarProps> = (props: IElement
       </div>
       <div ref={elementRef} className='h-96 text-gray-800'>
         <List
-          className='List'
+          className='List divide-y divide-black'
           itemCount={containers.length}
           itemSize={35}
           height={384}