<!DOCTYPE html>

<html>
<head>
    <style>
        div {
            position: absolute;
            font-size: 80px;
            color: gray;
        }

        .test-stroke {
            text-shadow: none;
            -webkit-text-stroke: 25px red;
            
            /* Clip used to isolate the stroke */
            -webkit-clip-path: inset(20px 55px 30px 15px);
        }        

        .fill-grey {
            text-shadow: none;
        
            /* Clip used to isolate the stroke */
            -webkit-clip-path: inset(20px 55px 30px 15px);
        }

    </style>
</head>
<body>

<div class="test-stroke" style="paint-order: fill; top: 0px">&#x25fc;</div>
<div class="test-stroke" style="paint-order: fill markers; top: 100px">&#x25fc;</div>
<div class="fill-grey" style="paint-order: stroke; top: 200px">&#x25fc;</div>
<div class="fill-grey" style="paint-order: stroke markers; top: 300px">&#x25fc;</div>
<div class="test-stroke" style="paint-order: markers; top: 400px">&#x25fc;</div>
<div class="fill-grey" style="paint-order: markers stroke; top: 500px">&#x25fc;</div>

</body>
</html>