Merged PR 179: Fix bugs about flex and context menu (see desc) + disable hard rigid behavior + add missing properties to form + Clean up css

- Clean up some css class
- Fix wrong order when applying flex
- Fix Replace behavior not working because previous container was still existing
- Disable hard rigid behavior which disallow two container to overlap
- Add ENABLE_FLEX, ENABLE_HARD_RIGID ENABLE_SWAP
- Add missing form properties with dimensions
- Update readme

src/Components/InputGroup/InputGroup.tsx

@@ -17,12 +17,7 @@ interface IInputGroupProps {
   onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void
 }
 
-const className = `
-        w-full
-        text-xs font-medium transition-all text-gray-800 mt-1 px-3 py-2
-        bg-white border-2 border-white rounded-lg placeholder-gray-800
-        focus:outline-none focus:border-blue-500 focus:ring-1 focus:ring-blue-500
-        disabled:bg-slate-300 disabled:text-gray-500 disabled:border-slate-300 disabled:shadow-none`;
+const className = 'input-group';
 
 export function InputGroup(props: IInputGroupProps): JSX.Element {
   return <>