Add custom css and rs classes for it

src/ts/gui/colorscheme.ts

@@ -4,6 +4,7 @@ import { downloadFile } from "../storage/globalApi";
 import { BufferToText, selectSingleFile } from "../util";
 import { alertError } from "../alert";
 import { isLite } from "../lite";
+import { CustomCSSStore, SafeModeStore } from "../stores";
 
 export interface ColorScheme{
     bgcolor: string;
@@ -179,7 +180,8 @@ export async function importColorScheme(){
     
     }
 }
-export function updateTextTheme(){
+
+export function updateTextThemeAndCSS(){
     let db = get(DataBase)
     const root = document.querySelector(':root') as HTMLElement;
     if(!root){
@@ -250,4 +252,11 @@ export function updateTextTheme(){
             break
         }
     }
+
+    if(!get(SafeModeStore)){
+        CustomCSSStore.set(db.customCSS ?? '')
+    }
+    else{
+        CustomCSSStore.set('')
+    }
 }