Fix unique id warning

src/components/FitCenter.tsx

@@ -3,7 +3,7 @@ import React from 'react'
 const FitCenter: React.FC<PropsWithChildren> = (props: PropsWithChildren) => {
     return (
         <>
-            <div id={'fit-center'}>{props.children}</div>
+            <div className={'fit-center'}>{props.children}</div>
         </>
     )
 }

src/components/FitFullScreen.tsx

@@ -4,7 +4,7 @@ const FitFullScreen: React.FC<FitFullscreenProps> = (props: FitFullscreenProps)
     return (
         <>
             <div
-                id={'fit-fullscreen'}
+                className={'fit-fullscreen'}
                 style={{
                     zIndex: props.zIndex,
                     backgroundColor: props.backgroundColor

src/components/LoadingMask.tsx

@@ -16,7 +16,7 @@ const LoadingMask: React.FC = () => {
     return (
         <>
             <FitFullScreen>
-                <div id={'loading-mask'}>
+                <div className={'loading-mask'}>
                     <AntdSpin indicator={loadingIcon} />
                 </div>
             </FitFullScreen>