index.html

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<head>
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="styles.css">
    <title>Document</title>
</head>
<body>
    <div id="my-popup" class="popup">
        <div class="close-btn">&times;</div> 
        <div class="form">
            <h2>TFX/USDT</h2>
            <h3>Price:<span>1.000</span></h3>
            <hr>
            <div class="form-element">
                <label for="amount">Available Amount</label>
                <label for="buy">Pending Buy</label><br><br>
                <label>5792.950000 TFX</label>
                <div id="countdown">10110748</div><br><br><br>
            </div>
            <div class="form-element">
                <label for="sell-amount">Sell Amount</label>
                <label for="filled">Filled</label><br><br>
                <input type="text" id="sell-amount" placeholder="0">
                <div id="countup">0</div><br>
                <hr><br>
            </div>
            <div class="form-element">
                <button type="button" id="button-text" class="button" onclick="this.classList.toggle('button--loading')"><span class="btn-text">Sell</span></button>
            </div>
        </div>
    </div>
    <script src="script.js"></script>
</body>
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