-HTML-and-CSS-Projects-/Basic_HTML_3.html at main · igorfaco/-HTML-and-CSS-Projects- · GitHub

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<!DOCTYPE html>
<html lang="pt-br">
<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>My first program</title>
    <link rel="stylesheet" type="text/css" href="Basic_CSS_1.css">

</head>
<body>
 <h1 class="font_1">Hello World! </h1>
 <h2 class="font_2">Hello Galaxy!</h2>

 <div style="color: rgb(255, 0, 0)">
    <h2> Your div heading is here </h2>
</div>

 <p> I have done this page </p>
 <script>
    var n1 = Number(window.prompt ( 'Type a number: ')) //string
    var n2 = Number(window.prompt ('Type another number: '))//string
    var s = n1 + n2
    window.alert( "Both added equals " + s ) /* aqui cuidado.
    number+number para adicao (Number)
    string+string = para concatenação (String) */

 </script>
</body>
</html>