LayoutTests/fast/images/background-image-size-changes-fractional-position.html - WebKit - Git at Google

 <!DOCTYPE html>
 <html>
 <head>
 <title>This tests that background image geometry is computed properly when size changes due to subpixel positioning.</title>
 <style>
 	body {
 		background-color: green;
 	}

 	div {
 		position: absolute;
 		top: 0px;
 		left: 0.4px;
 		width: 666.2px;
 		height: 100px;
 		background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAApoAAAAGCAYAAABjNz7uAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAI1JREFUeNrs1kEKwjAQBdDEbS7n/U8hYigiEgdX4i5towbfg0+7SMNPFmVyrbWlTjnntIc1+3zim9HrR/iFDjN2m7mrs/JtrTXn1XXafr0dRq/fci973WfvPqWUYzxOkXPkEqmRJXKN3CL3g18lAAAr5Jekt/cngyYAAEMYNAEAMGgCAGDQBADgzz0EGADSDSoT1JeLJQAAAABJRU5ErkJggg==);
 		background-position: 100% 0%;
 	}
 </style>
 </head>
 <body>
 	<div></div>
 </body>
 </html>
	<!DOCTYPE html>
	<html>
	<head>
	<title>This tests that background image geometry is computed properly when size changes due to subpixel positioning.</title>
	<style>
	body {
	background-color: green;
	}

	div {
	position: absolute;
	top: 0px;
	left: 0.4px;
	width: 666.2px;
	height: 100px;
	background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAApoAAAAGCAYAAABjNz7uAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAI1JREFUeNrs1kEKwjAQBdDEbS7n/U8hYigiEgdX4i5towbfg0+7SMNPFmVyrbWlTjnntIc1+3zim9HrR/iFDjN2m7mrs/JtrTXn1XXafr0dRq/fci973WfvPqWUYzxOkXPkEqmRJXKN3CL3g18lAAAr5Jekt/cngyYAAEMYNAEAMGgCAGDQBADgzz0EGADSDSoT1JeLJQAAAABJRU5ErkJggg==);
	background-position: 100% 0%;
	}
	</style>
	</head>
	<body>
	<div></div>
	</body>
	</html>