feat: dark mode for knowledge (#15236)

web/app/components/datasets/create/website/base/url-input.tsx

@@ -28,7 +28,7 @@ const UrlInput: FC<Props> = ({
   }, [isRunning, onRun, url])
 
   return (
-    <div className='flex items-center justify-between'>
+    <div className='flex items-center justify-between gap-x-2'>
       <Input
         value={url}
         onChange={handleUrlChange}
@@ -37,8 +37,8 @@ const UrlInput: FC<Props> = ({
       <Button
         variant='primary'
         onClick={handleOnRun}
-        className='ml-2'
         loading={isRunning}
+        spinnerClassName='!ml-0'
       >
         {!isRunning ? t(`${I18N_PREFIX}.run`) : ''}
       </Button>