diff --git a/src/plugins/platforms/wasm/qwasmcssstyle.cpp b/src/plugins/platforms/wasm/qwasmcssstyle.cpp
index bba120556e0..0002c05d393 100644
--- a/src/plugins/platforms/wasm/qwasmcssstyle.cpp
+++ b/src/plugins/platforms/wasm/qwasmcssstyle.cpp
@@ -31,6 +31,10 @@ const char *Style = R"css(
     background-color: lightgray;
 }
 
+.qt-window.transparent-for-input {
+    pointer-events: none;
+}
+
 .qt-window.has-shadow {
     box-shadow: rgb(0 0 0 / 20%) 0px 10px 16px 0px, rgb(0 0 0 / 19%) 0px 6px 20px 0px;
 }
diff --git a/src/plugins/platforms/wasm/qwasmwindow.cpp b/src/plugins/platforms/wasm/qwasmwindow.cpp
index 04678d8de23..a25be3490c4 100644
--- a/src/plugins/platforms/wasm/qwasmwindow.cpp
+++ b/src/plugins/platforms/wasm/qwasmwindow.cpp
@@ -360,6 +360,8 @@ void QWasmWindow::setWindowFlags(Qt::WindowFlags flags)
     m_flags = flags;
     dom::syncCSSClassWith(m_qtWindow, "has-title-bar", hasTitleBar());
     dom::syncCSSClassWith(m_qtWindow, "has-shadow", !flags.testFlag(Qt::NoDropShadowWindowHint));
+    dom::syncCSSClassWith(m_qtWindow, "transparent-for-input",
+                          flags.testFlag(Qt::WindowTransparentForInput));
 }
 
 void QWasmWindow::setWindowState(Qt::WindowStates newState)