<!DOCTYPE html> <!-- webkit-test-runner [ IOSFormControlRefreshEnabled=true ] -->
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
    body {
        background-color: green;
    }

    input {
        position: absolute;
        top: 1.5px;
        left: 0px;
        height: 16px;
        width: 16px;
        margin: 0px;
    }

    #overlay {
        position: absolute;
        top: 1.5px;
        left: 0px;
        height: 15.5px;
        width: 16px;
        margin: 0px;
        background-color: red;
    }
</style>
</head>
<body>
<input type="checkbox" checked disabled>
<div id="overlay"></div>
</body>
</html>
