<!DOCTYPE html>
<meta charset="utf-8">
<style>
    @font-face {
    font-family: variabletest_box;
    src: url(../../../http/tests/resources/variabletest_box.ttf);
    }

    body {
    font-family: variabletest_box, sans-serif;
    font-size: 200px;
    }

    /* Set a dummy value to trigger going
     * through the font varitions code path. */
    .ref_up {
    font-variation-settings: "none" 0;
    }
</style>
▄ <span class="ref_up">▀</span>