index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>chronometre</title>
    <link rel="stylesheet" href="style.css">
    <script src="script.js" defer></script>
</head>
<body>
    <div class="container">
        <div class="time">
            <span id="hours"></span>
            <span id="minutes"></span>
            <span id="seconds"></span>
        </div>
        <div>
            <button id="button" onclick="openPopup()">SET A STOPWATCH</button>
        </div>
    </div>



    <div class="popup" id="popup">
        <button id="X-btn" onclick="closePopup()">X</button>

        <div class="pop_container">
        <div class="stopwatch">
            <span id="hourstopwatch"></span>
            <span id="minutetopwatch"></span>
            <span id="secondstopwatch"></span>
        </div>
        <div class="stopWatchbtn">
            <button class="btn" id=" start" onclick="start()">START</button>
            <button class="btn" id=" stop" onclick="stop()">STOP</button>
            <button class="btn" id=" reset" onclick="reset()">RESET</button>
        </div>
      
        </div>
    </div>
</body>
</html>