highlight-text-across-elements-ref.html

<!DOCTYPE html>
<html>
<head>
    <style>
        #style1 {
            background-color: yellow;
            color:green;
        }
        #style2 {
            background-color: blue;
            color:red;
        }
        #style3 {
            background-color: purple;
            color:pink;
        }
    </style>
</head>
<body>
    One <span id="style1">two</span> th<span id="style2">ree
    four</span> five <span id="style2">six
    seven</span> eigh<span id="style3">t nine
    ten eleven twelve
    thirteen fou</span>rteen fifteen
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/highlight-text-across-elements-ref.html