diff --git a/server/.vscode/settings.json b/server/.vscode/settings.json
index 44a83b8a..74edea8b 100644
--- a/server/.vscode/settings.json
+++ b/server/.vscode/settings.json
@@ -2,5 +2,6 @@
   "files.exclude": {},
   "search.exclude": {
     "fmt": true,
-  }
+  },
+  "liveServer.settings.port": 5501
 }
\ No newline at end of file
diff --git a/server/CMakeLists.txt b/server/CMakeLists.txt
index c03324e9..ba6cf16c 100644
--- a/server/CMakeLists.txt
+++ b/server/CMakeLists.txt
@@ -7,7 +7,7 @@ project(${PROJECT_NAME} VERSION 1.0)
 # Boost
 set(Boost_ROOT "C:/Users/SonnyCalcr/scoop/apps/boost/1.87.0")
 set (Boost_USE_STATIC_LIBS ON)
-find_package(Boost REQUIRED COMPONENTS locale)
+find_package(Boost REQUIRED COMPONENTS locale json)
 
 # fmt and spdlog
 set(CMAKE_PREFIX_PATH "C:/Users/SonnyCalcr/EDisk/CppCodes/Libraries/AllLibs")
@@ -24,9 +24,9 @@ add_definitions(
     /DUNICODE=1
 )
 
-# add_definitions(
-#     /DFANY_DEBUG=1
-# )
+add_definitions(
+    /DFANY_DEBUG=1
+)
 
 include_directories("./src/")
 
@@ -56,4 +56,4 @@ set_target_properties(${PROJECT_NAME} PROPERTIES VS_GLOBAL_WebView2LoaderPrefere
 set_target_properties(${PROJECT_NAME} PROPERTIES VS_USER_PROPS "${CMAKE_SOURCE_DIR}/FanIME_UI.props")
 set_target_properties(${PROJECT_NAME} PROPERTIES VS_PACKAGE_REFERENCES "Microsoft.Web.WebView2_1.0.3124.44;Microsoft.Windows.ImplementationLibrary_1.0.240803.1")
 
-target_link_libraries(${PROJECT_NAME} fmt::fmt spdlog::spdlog Boost::locale)
\ No newline at end of file
+target_link_libraries(${PROJECT_NAME} fmt::fmt spdlog::spdlog Boost::locale Boost::json)
\ No newline at end of file
diff --git a/server/html/default-themes/body/horizontal_candidate_window_dark.html b/server/html/default-themes/body/horizontal_candidate_window_dark.html
index 1cf569a1..0edc97fc 100644
--- a/server/html/default-themes/body/horizontal_candidate_window_dark.html
+++ b/server/html/default-themes/body/horizontal_candidate_window_dark.html
@@ -1,4 +1,4 @@
-<div class="container">
+<div class="container" id="container">
   <!--0Anchor-->
   <div class="row pinyin">
     <div class="text">{0}</div>
diff --git a/server/html/default-themes/body/vertical_candidate_window_dark.html b/server/html/default-themes/body/vertical_candidate_window_dark.html
index 1cf569a1..0edc97fc 100644
--- a/server/html/default-themes/body/vertical_candidate_window_dark.html
+++ b/server/html/default-themes/body/vertical_candidate_window_dark.html
@@ -1,4 +1,4 @@
-<div class="container">
+<div class="container" id="container">
   <!--0Anchor-->
   <div class="row pinyin">
     <div class="text">{0}</div>
diff --git a/server/html/default-themes/horizontal_candidate_window_dark.html b/server/html/default-themes/horizontal_candidate_window_dark.html
index 2f17d976..262685ef 100644
--- a/server/html/default-themes/horizontal_candidate_window_dark.html
+++ b/server/html/default-themes/horizontal_candidate_window_dark.html
@@ -80,7 +80,7 @@
 </head>
 
 <body>
-  <div class="container">
+  <div class="container" id="container">
     <div class="pinyin-row">
       <div class="row pinyin">
         <div class="text">ni'uo</div>
diff --git a/server/html/default-themes/vertical_candidate_window_dark.html b/server/html/default-themes/vertical_candidate_window_dark.html
index 47936cc6..28b42f11 100644
--- a/server/html/default-themes/vertical_candidate_window_dark.html
+++ b/server/html/default-themes/vertical_candidate_window_dark.html
@@ -83,7 +83,7 @@
 </head>
 
 <body>
-  <div class="container">
+  <div class="container" id="container">
     <!--0Anchor-->
     <div class="row pinyin">
       <div class="text">ni'uo</div>
diff --git a/server/src/defines/base_structures.h b/server/src/defines/base_structures.h
new file mode 100644
index 00000000..d6a975cf
--- /dev/null
+++ b/server/src/defines/base_structures.h
@@ -0,0 +1,9 @@
+#pragma once
+
+struct MonitorCoordinates
+{
+    int left = 0;
+    int top = 0;
+    int right = 0;
+    int bottom = 0;
+};
\ No newline at end of file
diff --git a/server/src/utils/webview_utils.cpp b/server/src/utils/webview_utils.cpp
index 368ec981..29c65e4f 100644
--- a/server/src/utils/webview_utils.cpp
+++ b/server/src/utils/webview_utils.cpp
@@ -1,6 +1,9 @@
 #include "webview_utils.h"
 #include "spdlog/spdlog.h"
 #include "utils/common_utils.h"
+#include <boost/json.hpp>
+
+namespace json = boost::json;
 
 void MeasureDomUpdateTime(ComPtr<ICoreWebView2> webview)
 {
@@ -16,4 +19,62 @@ void MeasureDomUpdateTime(ComPtr<ICoreWebView2> webview)
     auto duration = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
     std::wstring message = L"DOM update time: " + std::to_wstring(duration.count()) + L" μs";
     spdlog::info(wstring_to_string(message));
+}
+
+std::pair<double, double> ParseDivSize(const std::wstring &jsonResult)
+{
+    std::string jsonStr = wstring_to_string(jsonResult);
+#ifdef FANY_DEBUG
+    spdlog::info("Div size: {}", jsonStr);
+#endif
+    auto size = std::make_pair(0.0, 0.0);
+    try
+    {
+        json::value parsed = json::parse(jsonStr);
+        if (parsed.is_string())
+        {
+            parsed = json::parse(parsed.as_string());
+        }
+        double width = parsed.at("width").is_int64()           //
+                           ? parsed.at("width").as_int64()     //
+                           : parsed.at("width").as_double();   //
+        double height = parsed.at("height").is_int64()         //
+                            ? parsed.at("height").as_int64()   //
+                            : parsed.at("height").as_double(); //
+        size = std::make_pair(width, height);
+    }
+    catch (const std::exception &e)
+    {
+#ifdef FANY_DEBUG
+        spdlog::error("Failed to parse JSON: {}", e.what());
+#endif
+    }
+    return size;
+}
+
+void GetContainerSize(ComPtr<ICoreWebView2> webview, std::function<void(std::pair<double, double>)> callback)
+{
+    std::wstring script = LR"(
+        (function() {
+            var rect = document.querySelector("#container").getBoundingClientRect();
+            return JSON.stringify({width: rect.width, height: rect.height});
+        })();
+    )";
+    webview->ExecuteScript( //
+        script.c_str(),     //
+        Callback<ICoreWebView2ExecuteScriptCompletedHandler>([callback](HRESULT errorCode, LPCWSTR result) -> HRESULT {
+            std::pair<double, double> size;
+            if (SUCCEEDED(errorCode) && result)
+            {
+                size = ParseDivSize(result);
+            }
+            else
+            {
+#ifdef FANY_DEBUG
+                spdlog::error("Failed to get container size.");
+#endif
+            }
+            callback(size);
+            return S_OK;
+        }).Get());
 }
\ No newline at end of file
diff --git a/server/src/utils/webview_utils.h b/server/src/utils/webview_utils.h
index 9f93a71e..01a1cd56 100644
--- a/server/src/utils/webview_utils.h
+++ b/server/src/utils/webview_utils.h
@@ -1,5 +1,8 @@
 #pragma once
 
 #include "webview2/candidate_window_webview2.h"
+#include <utility>
 
-void MeasureDomUpdateTime(ComPtr<ICoreWebView2>);
\ No newline at end of file
+void MeasureDomUpdateTime(ComPtr<ICoreWebView2>);
+
+void GetContainerSize(ComPtr<ICoreWebView2>, std::function<void(std::pair<double, double>)>);
\ No newline at end of file
diff --git a/server/src/utils/window_utils.cpp b/server/src/utils/window_utils.cpp
new file mode 100644
index 00000000..ed2b22bc
--- /dev/null
+++ b/server/src/utils/window_utils.cpp
@@ -0,0 +1,70 @@
+#include "window_utils.h"
+#include "spdlog/spdlog.h"
+
+FLOAT GetWindowScale(HWND hwnd)
+{
+    UINT dpi = GetDpiForWindow(hwnd);
+    FLOAT scale = dpi / 96.0f;
+    return scale;
+}
+
+//+---------------------------------------------------------------------------
+//
+// GetMonitorCoordinates
+//
+//----------------------------------------------------------------------------
+
+MonitorCoordinates GetMonitorCoordinates()
+{
+    MonitorCoordinates coordinates;
+    HWND hwnd = GetForegroundWindow();
+    FLOAT scale = GetWindowScale(hwnd);
+    HMONITOR hMonitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
+    if (!hMonitor)
+    {
+#ifdef FANY_DEBUG
+        spdlog::error("Failed to get monitor.");
+#endif
+        return coordinates;
+    }
+
+    MONITORINFO monitorInfo = {sizeof(monitorInfo)};
+    if (GetMonitorInfo(hMonitor, &monitorInfo))
+    {
+        int width = (monitorInfo.rcMonitor.right - monitorInfo.rcMonitor.left) * scale;
+        int height = (monitorInfo.rcMonitor.bottom - monitorInfo.rcMonitor.top) * scale;
+        coordinates.left = monitorInfo.rcMonitor.left * scale;
+        coordinates.top = monitorInfo.rcMonitor.top * scale;
+        coordinates.right = coordinates.left + width;
+        coordinates.bottom = coordinates.top + height;
+    }
+    else
+    {
+#ifdef FANY_DEBUG
+        spdlog::error("Failed to get monitor info.");
+#endif
+    }
+    return coordinates;
+}
+
+int AdjustCandidateWindowPosition(POINT &point)
+{
+    MonitorCoordinates coordinates = GetMonitorCoordinates();
+    if (point.x < coordinates.left)
+    {
+        point.x = coordinates.left + 2;
+    }
+    if (point.y < coordinates.top)
+    {
+        point.y = coordinates.top + 2;
+    }
+    if (point.x > coordinates.right)
+    {
+        point.x = coordinates.right - 2;
+    }
+    if (point.y > coordinates.bottom)
+    {
+        point.y = coordinates.bottom - 2;
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/server/src/utils/window_utils.h b/server/src/utils/window_utils.h
new file mode 100644
index 00000000..5df55eec
--- /dev/null
+++ b/server/src/utils/window_utils.h
@@ -0,0 +1,9 @@
+#include "defines/base_structures.h"
+#include <windows.h>
+
+
+FLOAT GetWindowScale(HWND);
+
+MonitorCoordinates GetMonitorCoordinates();
+
+int AdjustCandidateWindowPosition(POINT &);
\ No newline at end of file
diff --git a/server/src/window/candidate_window.cpp b/server/src/window/candidate_window.cpp
index 4761e3f5..e47f7402 100644
--- a/server/src/window/candidate_window.cpp
+++ b/server/src/window/candidate_window.cpp
@@ -2,8 +2,10 @@
 #include "defines/defines.h"
 #include "spdlog/spdlog.h"
 #include "utils/common_utils.h"
+#include "utils/webview_utils.h"
 #include "webview2/candidate_window_webview2.h"
 #include <minwindef.h>
+#include <string>
 
 LRESULT RegisterCandidateWindowMessage()
 {
@@ -129,6 +131,13 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
                 (246 + 15) * 1.5, //
                 TRUE              //
             );                    //
+#ifdef FANY_DEBUG
+            std::string windowPos = std::to_string(pt->x) + "," + std::to_string(pt->y);
+            spdlog::info(windowPos);
+            GetContainerSize(webview, [](std::pair<double, double> size) {
+                spdlog::info("Container size: ({}, {})", size.first, size.second);
+            });
+#endif
         }
         else if (pcds->dwData == 1)
         {