js_task6.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        function details(){
            document.getElementById('product').innerHTML="<p style='font-size:20;color:GREEN;'>Cheese pizza with extra veggie toppings</p>"
        }

        function discount(){
            var price = parseInt(document.getElementById('price').value);
            document.getElementById('info').innerHTML=0.05*price
        }
    </script>
</head>
<body>
    <div style="background-color: aqua; width: 200; height: 200;" onmouseover="details()" id="product">
        Pizza
    </div>
    <br>
    Enter price: <input type="number" name="" id="price" onkeydown="discount()">
    <p id="info"></p>

</body>
</html>