<head>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        p {
            padding: 10px;
            border: 1px solid black;
            width: 50%;
            margin: 10px 0;
        }
        button {
            padding: 8px 15px;
            margin: 5px;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <button id="hideBtn">Hide Paragraphs</button>
    <button id="showBtn">Show Paragraphs</button>
    <p>This is the first paragraph.</p>
    <p>This is the second paragraph.</p>
    <script>
        $(document).ready(function() {
            $("#hideBtn").click(function() {
                $("p").hide("slow");
            });

            $("#showBtn").click(function() {
                $("p").show("fast");
            });
        });
    </script>
</body>

External CSS

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External JavaScript

This Pen doesn't use any external JavaScript resources.