refactor to UI components

src/components/ui/UIModal.vue

@@ -36,13 +36,13 @@ if (!props.persistent) onClickOutside(modalBox, () => close())
 
 const onEnter = (el: Element, done: () => void): void => {
   setTimeout(() => {
-    el.classList.add('modal-open')
+    el.classList.add('dui-modal-open')
     done()
   })
 }
 
 const onLeave = (el: Element, done: () => void): void => {
-  el.classList.remove('modal-open')
+  el.classList.remove('dui-modal-open')
   el.addEventListener('transitionend', () => done())
 }