diff --git a/src/components/Playground/CodeEditor/FileSelector/index.tsx b/src/components/Playground/CodeEditor/FileSelector/index.tsx
index ac8e15d..5f07aa5 100644
--- a/src/components/Playground/CodeEditor/FileSelector/index.tsx
+++ b/src/components/Playground/CodeEditor/FileSelector/index.tsx
@@ -1,14 +1,10 @@
 import React from 'react'
 import '@/components/Playground/CodeEditor/FileSelector/file-selector.scss'
-import { IFiles } from '@/components/Playground/shared'
-import {
-    ENTRY_FILE_NAME,
-    getFileNameList,
-    IMPORT_MAP_FILE_NAME
-} from '@/components/Playground/files'
-import Item from '@/components/Playground/CodeEditor/FileSelector/Item'
 import HideScrollbar, { HideScrollbarElement } from '@/components/common/HideScrollbar'
 import FlexBox from '@/components/common/FlexBox'
+import { IFiles } from '@/components/Playground/shared'
+import { getFileNameList, IMPORT_MAP_FILE_NAME } from '@/components/Playground/files'
+import Item from '@/components/Playground/CodeEditor/FileSelector/Item'
 
 interface FileSelectorProps {
     files?: IFiles
@@ -103,10 +99,8 @@ const FileSelector: React.FC<FileSelectorProps> = ({
     }
 
     const handleOnValidateTab = (newFileName: string, oldFileName: string) => {
-        if (!/\.(jsx|tsx|js|ts|css|json|svg)$/.test(newFileName)) {
-            onError?.(
-                'Playground only supports *.jsx, *.tsx, *.js, *.ts, *.css, *.json, *.svg files.'
-            )
+        if (!/\.(jsx|tsx|js|ts|css|json)$/.test(newFileName)) {
+            onError?.('Playground only supports *.jsx, *.tsx, *.js, *.ts, *.css, *.json files.')
 
             return false
         }
@@ -128,8 +122,7 @@ const FileSelector: React.FC<FileSelectorProps> = ({
         onRemoveFile?.(fileName)
         if (fileName === selectedFileName) {
             const keys = getFileNameList(files).filter(
-                (item) =>
-                    ![IMPORT_MAP_FILE_NAME, ENTRY_FILE_NAME].includes(item) && !files[item].hidden
+                (item) => ![IMPORT_MAP_FILE_NAME].includes(item) && !files[item].hidden
             )
             const index = keys.indexOf(fileName) - 1
             if (index >= 0) {
@@ -144,9 +137,7 @@ const FileSelector: React.FC<FileSelectorProps> = ({
         getFileNameList(files).length
             ? setTabs(
                   getFileNameList(files).filter(
-                      (item) =>
-                          ![IMPORT_MAP_FILE_NAME, ENTRY_FILE_NAME].includes(item) &&
-                          !files[item].hidden
+                      (item) => ![IMPORT_MAP_FILE_NAME].includes(item) && !files[item].hidden
                   )
               )
             : setTabs([])
diff --git a/src/components/Playground/CodeEditor/index.tsx b/src/components/Playground/CodeEditor/index.tsx
index 35fad62..93d7e0b 100644
--- a/src/components/Playground/CodeEditor/index.tsx
+++ b/src/components/Playground/CodeEditor/index.tsx
@@ -1,6 +1,7 @@
 import React from 'react'
 import _ from 'lodash'
 import '@/components/Playground/CodeEditor/code-editor.scss'
+import FlexBox from '@/components/common/FlexBox'
 import { IEditorOptions, IFiles, ITheme } from '@/components/Playground/shared'
 import {
     fileNameToLanguage,
@@ -9,7 +10,6 @@ import {
 } from '@/components/Playground/files'
 import FileSelector from '@/components/Playground/CodeEditor/FileSelector'
 import Editor from '@/components/Playground/CodeEditor/Editor'
-import FlexBox from '@/components/common/FlexBox'
 
 interface CodeEditorProps {
     theme?: ITheme
diff --git a/src/components/Playground/Output/Preview/index.tsx b/src/components/Playground/Output/Preview/index.tsx
index 17e310f..18366b2 100644
--- a/src/components/Playground/Output/Preview/index.tsx
+++ b/src/components/Playground/Output/Preview/index.tsx
@@ -1,9 +1,9 @@
 import React, { useRef, useState } from 'react'
-import { IFiles, IImportMap } from '@/components/Playground/shared'
-import iframeRaw from '@/components/Playground/Output/Preview/iframe.html?raw'
 import { useUpdatedEffect } from '@/util/hooks'
-import Compiler from '@/components/Playground/compiler'
 import '@/components/Playground/Output/Preview/preview.scss'
+import { IFiles, IImportMap } from '@/components/Playground/shared'
+import Compiler from '@/components/Playground/compiler'
+import iframeRaw from '@/components/Playground/Output/Preview/iframe.html?raw'
 
 interface PreviewProps {
     iframeKey: string
diff --git a/src/components/Playground/Output/Transform/index.tsx b/src/components/Playground/Output/Transform/index.tsx
index 1b01cf8..122a3a0 100644
--- a/src/components/Playground/Output/Transform/index.tsx
+++ b/src/components/Playground/Output/Transform/index.tsx
@@ -1,13 +1,13 @@
-import React, { useState } from 'react'
+import React from 'react'
 import MonacoEditor from '@monaco-editor/react'
 import { Loader } from 'esbuild-wasm'
 import '@/components/Playground/Output/Transform/transform.scss'
-import { useUpdatedEffect } from '@/util/hooks.tsx'
-import { IFile, ITheme } from '@/components/Playground/shared.ts'
-import Compiler from '@/components/Playground/compiler.ts'
-import { cssToJs, jsonToJs } from '@/components/Playground/files.ts'
-import { MonacoEditorConfig } from '@/components/Playground/CodeEditor/Editor/monacoConfig.ts'
-import { addReactImport } from '@/components/Playground/utils.ts'
+import { useUpdatedEffect } from '@/util/hooks'
+import { IFile, ITheme } from '@/components/Playground/shared'
+import { addReactImport } from '@/components/Playground/utils'
+import { cssToJs, jsonToJs } from '@/components/Playground/files'
+import Compiler from '@/components/Playground/compiler'
+import { MonacoEditorConfig } from '@/components/Playground/CodeEditor/Editor/monacoConfig'
 
 interface OutputProps {
     file: IFile
diff --git a/src/components/Playground/Output/index.tsx b/src/components/Playground/Output/index.tsx
index 680efb1..6c58d20 100644
--- a/src/components/Playground/Output/index.tsx
+++ b/src/components/Playground/Output/index.tsx
@@ -1,8 +1,8 @@
-import React, { useState } from 'react'
-import FlexBox from '@/components/common/FlexBox.tsx'
+import React from 'react'
+import FlexBox from '@/components/common/FlexBox'
+import { IFiles, IImportMap } from '@/components/Playground/shared'
 import FileSelector from '@/components/Playground/CodeEditor/FileSelector'
 import Transform from '@/components/Playground/Output/Transform'
-import { IFiles, IImportMap } from '@/components/Playground/shared.ts'
 import Preview from '@/components/Playground/Output/Preview'
 
 interface OutputProps {
diff --git a/src/components/Playground/compiler.ts b/src/components/Playground/compiler.ts
index c86aa76..97f4761 100644
--- a/src/components/Playground/compiler.ts
+++ b/src/components/Playground/compiler.ts
@@ -1,9 +1,9 @@
 import esbuild, { Loader, OnLoadArgs, Plugin, PluginBuild } from 'esbuild-wasm'
-import { IFiles, IImportMap } from '@/components/Playground/shared.ts'
-import { cssToJs, ENTRY_FILE_NAME, jsonToJs } from '@/components/Playground/files.ts'
 import localforage from 'localforage'
 import axios from 'axios'
-import { addReactImport } from '@/components/Playground/utils.ts'
+import { IFiles, IImportMap } from '@/components/Playground/shared'
+import { cssToJs, ENTRY_FILE_NAME, jsonToJs } from '@/components/Playground/files'
+import { addReactImport } from '@/components/Playground/utils'
 
 class Compiler {
     private init = false
@@ -108,6 +108,9 @@ class Compiler {
                             path: `${args.path.substring(2)}.js`
                         }
                     }
+                    if (/\.\/.*\.css/.test(args.path) && !args.resolveDir) {
+                        throw Error(`Css '${args.path}' not found`)
+                    }
 
                     if (/^https?:\/\/.*/.test(args.path)) {
                         return {
@@ -155,14 +158,6 @@ class Compiler {
                     }
                 })
 
-                build.onLoad({ filter: /.*\.svg$/ }, async (args: OnLoadArgs) => {
-                    const contents = files[args.path].value
-                    return {
-                        loader: 'text',
-                        contents
-                    }
-                })
-
                 build.onLoad({ filter: /.*/ }, async (args: OnLoadArgs) => {
                     if (args.path === ENTRY_FILE_NAME) {
                         return {
diff --git a/src/components/Playground/files.ts b/src/components/Playground/files.ts
index b1138e0..695e0f0 100644
--- a/src/components/Playground/files.ts
+++ b/src/components/Playground/files.ts
@@ -1,9 +1,9 @@
 import { strFromU8, strToU8, unzlibSync, zlibSync } from 'fflate'
+import { IFile, IFiles, IImportMap, ILanguage } from '@/components/Playground/shared'
 import importMap from '@/components/Playground/template/import-map.json?raw'
 import AppCss from '@/components/Playground/template/src/App.css?raw'
 import App from '@/components/Playground/template/src/App.tsx?raw'
 import main from '@/components/Playground/template/src/main.tsx?raw'
-import { IFile, IFiles, IImportMap, ILanguage } from '@/components/Playground/shared'
 
 export const MAIN_FILE_NAME = 'App.tsx'
 export const IMPORT_MAP_FILE_NAME = 'import-map.json'
@@ -17,7 +17,6 @@ export const fileNameToLanguage = (name: string): ILanguage => {
     if (['ts', 'tsx'].includes(suffix)) return 'typescript'
     if (['json'].includes(suffix)) return 'json'
     if (['css'].includes(suffix)) return 'css'
-    if (['svg'].includes(suffix)) return 'xml'
     return 'javascript'
 }
 
@@ -95,7 +94,8 @@ export const initFiles: IFiles = getFilesFromUrl() || {
     [ENTRY_FILE_NAME]: {
         name: ENTRY_FILE_NAME,
         language: fileNameToLanguage(ENTRY_FILE_NAME),
-        value: main
+        value: main,
+        hidden: true
     },
     [MAIN_FILE_NAME]: {
         name: MAIN_FILE_NAME,
diff --git a/src/components/Playground/index.tsx b/src/components/Playground/index.tsx
index 1aa0bc2..df2b8a9 100644
--- a/src/components/Playground/index.tsx
+++ b/src/components/Playground/index.tsx
@@ -1,10 +1,10 @@
-import React, { useState } from 'react'
+import React from 'react'
 import '@/components/Playground/playground.scss'
+import { IFiles, IImportMap } from '@/components/Playground/shared'
+import { IMPORT_MAP_FILE_NAME, MAIN_FILE_NAME } from '@/components/Playground/files'
 import FlexBox from '@/components/common/FlexBox'
 import CodeEditor from '@/components/Playground/CodeEditor'
 import Output from '@/components/Playground/Output'
-import { IFiles, IImportMap } from '@/components/Playground/shared.ts'
-import { IMPORT_MAP_FILE_NAME, MAIN_FILE_NAME } from '@/components/Playground/files.ts'
 
 interface PlaygroundProps {
     initFiles: IFiles