diff --git a/src/css/support.js b/src/css/support.js
index 5404f8cd88..dbb7ef7ce1 100644
--- a/src/css/support.js
+++ b/src/css/support.js
@@ -30,16 +30,16 @@ define( [
pixelPositionVal = divStyle.top !== "1%";
// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
- reliableMarginLeftVal = divStyle.marginLeft === "12px";
+ reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;
// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
// Some styles come back with percentage values, even though they shouldn't
div.style.right = "60%";
- pixelBoxStylesVal = divStyle.right === "36px";
+ pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;
// Support: IE 9 - 11 only
// Detect misreporting of content dimensions for box-sizing:border-box elements
- boxSizingReliableVal = divStyle.width === "36px";
+ boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;
// Support: IE 9 only
// Detect overflow:scroll screwiness (gh-3699)
@@ -53,6 +53,10 @@ define( [
div = null;
}
+ function roundPixelMeasures( measure ) {
+ return Math.round( parseFloat( measure ) );
+ }
+
var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
reliableMarginLeftVal,
container = document.createElement( "div" ),
diff --git a/test/data/css/cssWidthBrowserZoom.html b/test/data/css/cssWidthBrowserZoom.html
new file mode 100644
index 0000000000..99f87ea292
--- /dev/null
+++ b/test/data/css/cssWidthBrowserZoom.html
@@ -0,0 +1,26 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/test/unit/css.js b/test/unit/css.js
index 285ad2ef0e..2ca72c1aad 100644
--- a/test/unit/css.js
+++ b/test/unit/css.js
@@ -1164,6 +1164,15 @@ testIframe(
}
);
+testIframe(
+ "css('width') should work correctly with browser zooming",
+ "css/cssWidthBrowserZoom.html",
+ function( assert, jQuery, window, document, cssWidthBrowserZoom ) {
+ assert.expect( 1 );
+ assert.strictEqual( cssWidthBrowserZoom, "100px", "elem.css('width') works correctly with browser zoom" );
+ }
+);
+
( function() {
var supportsFractionalGBCR,
qunitFixture = document.getElementById( "qunit-fixture" ),