<head>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        p {
            font-size: 18px;
            padding: 10px;
            border: 1px solid black;
            width: 50%;
        }
    </style>
</head>
<body>
    <p>This is the first paragraph.</p>
    <p>This is the second paragraph.</p>
    <button id="fadeToBtn">Fade Paragraphs</button>
    <script>
        $(document).ready(function() {
            $("#fadeToBtn").click(function() {
                $("p").fadeTo("slow", 0.5);
            });
        });
    </script>
</body>

External CSS

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External JavaScript

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