diff --git a/CMakeLists.txt b/CMakeLists.txt
index cc0065e899088655c2303f5951a3f89e0bdbd4b7..c2e4d802656d80b40908e3d398d3622069128afc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ find_package(
     REQUIRED
 )
 
-set(QT_MINIMUM_VERSION 6.7.0)
+set(QT_MINIMUM_VERSION 6.8.0)
 if(QT_VERSION VERSION_LESS QT_MINIMUM_VERSION)
     message(FATAL_ERROR "Minimum supported Qt version: ${QT_MINIMUM_VERSION}")
 endif()
@@ -65,6 +65,7 @@ install(
     FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.html
     FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.wasm
     FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.js
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.worker.js
     FILES ${CMAKE_CURRENT_BINARY_DIR}/qtloader.js
     DESTINATION ${CMAKE_INSTALL_PREFIX}
 )
diff --git a/emsdk b/emsdk
index a36df02dc438e8b02f91122a4c62eeecb6784272..d52c46520124845b1e0e0525f2759299d840143f 160000
--- a/emsdk
+++ b/emsdk
@@ -1 +1 @@
-Subproject commit a36df02dc438e8b02f91122a4c62eeecb6784272
+Subproject commit d52c46520124845b1e0e0525f2759299d840143f
diff --git a/qtquickdesigner-components b/qtquickdesigner-components
index 80b9e31a8863c9bf2a57c3d569b761d9df71cdb3..20397e26370ff073125fd19f77c7ad013276b5bd 160000
--- a/qtquickdesigner-components
+++ b/qtquickdesigner-components
@@ -1 +1 @@
-Subproject commit 80b9e31a8863c9bf2a57c3d569b761d9df71cdb3
+Subproject commit 20397e26370ff073125fd19f77c7ad013276b5bd
diff --git a/src/designviewer.cpp b/src/designviewer.cpp
index 54e18db98f4a106f9fd3a748fbb36acdc06548ad..591bc5812161f9efe9415c25f1572e0c979caa4b 100644
--- a/src/designviewer.cpp
+++ b/src/designviewer.cpp
@@ -27,6 +27,7 @@
 
 #include <emscripten.h>
 #include <emscripten/val.h>
+
 #include <functional>
 
 #include <QBuffer>
@@ -328,8 +329,8 @@ void DesignViewer::showAppWindow()
         size = QSize(contentItem->width(), contentItem->height());
     }
 
-    qtContainerStyle.set("width", std::format("{}px", size.width()));
-    qtContainerStyle.set("height", std::format("{}px", size.height()));
+    qtContainerStyle.set("width", std::to_string(size.width()) + "px");
+    qtContainerStyle.set("height", std::to_string(size.height()) + "px");
 
     qDebug() << "Showing the QML app window";
     m_quickWindow->show();
diff --git a/www/resources/styles/default.css b/www/resources/styles/default.css
index 7fbcc938449d9403f41896ae0693c7464ca1163a..3dcf6bfcca59bb6955d61679a8cd731f5aeb726d 100644
--- a/www/resources/styles/default.css
+++ b/www/resources/styles/default.css
@@ -14,7 +14,15 @@
   font-weight: 100;
   font-style: italic;
 }
-
+html,
+body {
+  background-color: #262525;
+  color: #e0e0e0;
+  font-family: Titillium;
+  font-size: 1.1em;
+  font-weight: 100;
+  font-style: italic;
+}
 a {
   color: #e0e0e0;
 }