HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="../CSS/Z34.css">
    <title>Document</title>
    <style>
        h1{
            width: 400pt;
            height: 3cm;
            background-color: yellow;
            border-style: groove;
            border-top-color: silver;
            border-left-color: yellow;
            border-right-color: teal;
            border-bottom-color: red;
            margin-left: 21%;
            font-size: xx-small;
        }
        h2{
            width: 280pt;
            height: 4cm;
            background-color: lightyellow;
            border-color: maroon;
            border-style: ridge;
            margin-left: 14%;
            font-size: medium;
        }
    </style>
</head>
<body>
    <h1>Michałowski <br> width: 400pt; <br>
        height: 3cm;<br>
        background-color: #ffee00; <br>
        border-style: groove;<br>
        border-top-color: silver;<br>
        border-left-color: yellow;<br>
        border-right-color: teal;<br>
        border-bottom-color: red;<br>
        margin-left: 21%; <br>
        font-size: xx-small;</h1>

<h2>Olivier <br>
        width: 280pt;<br>
            height: 4cm;<br>
            background-color: #fffc4c;<br>
            border-color: maroon;<br>
            border-style: ridge;<br>
            margin-left: 14%; <br>
            font-size: medium;
    </h2>
    <h3>20 - 2G <br>
        width: 350pt;<br>
            height: 2cm;<br>
            background-color: #c5b800;<br>
            border-color: fuchsia;<br>
            border-style: ridge;<br>
            margin-left: 50%; <br>
            font-size: xx-small;
    </h3>
</body>
</html>