<!doctype html>
<meta charset="utf-8">
<link rel="stylesheet" href="support/highlights.css">
<style>
    * {
        text-decoration-skip-ink: none;
        text-decoration-skip: none;
    }
    main {
        font-size: 7em;
        margin: 0.5em;
        width: min-content;
    }
    .unselected {
        text-decoration: #E03838C0 wavy underline;
        color: #C0C000C0;
    }
    .selected {
        background: #38E038C0;
        text-decoration: #3838E0C0 wavy underline;
    }
    .selected, .selected * {
        color: #3838E0C0;
    }
    .selection {
        text-decoration: #663399C0 wavy line-through;
    }
</style>
<!--
    In this ref, three separate wavy lines are painted, with two
    spanning the selected part and one spanning the unselected part.
-->
<main class="highlight_reftest">
    <div class="hrt_layers">
        <div>qui<span class="unselected">ck</span></div>
        <div><span class="selected"><span class="selection">qui</span></span>ck</div>
        quick
    </div>
</main>