<!DOCTYPE html>

<html>
<head>
    <style>
        div {
            font-size: 80px;
            color: gray;
            text-shadow: none;
            -webkit-text-stroke-color: blue;
            display: inline;
        }
    </style>
</head>
<body>

<div style="-webkit-text-stroke-width: 25px;">&#x25fc;</div>
<div style="-webkit-text-stroke-width: 0.2in;">&#x25fc;</div>
<div style="-webkit-text-stroke-width: 2mm;">&#x25fc;</div>
<div style="-webkit-text-stroke-width: 0.1cm;">&#x25fc;</div>

<div style="-webkit-text-stroke-width: 25px;"><span>&#x25fc;</span></div>
<div style="-webkit-text-stroke-width: 0.2in;"><span>&#x25fc;</span></div>
<div style="-webkit-text-stroke-width: 2mm;"><span>&#x25fc;</span></div>
<div style="-webkit-text-stroke-width: 0.1cm;"><span>&#x25fc;</span></div>

</body>
</html>