<!DOCTYPE html>
<html lang="pl">
<head>
<title>Moja strona</title>
<meta charset="utf-8"/>
<link rel="stylesheet" href="style.css" type="text/css"/>
</head>
<body>
<div id="container">
<div id="logo">
<img src="Img/logo.jpg"/>
</div>
</body>
</html>
#logo {
width: 50%;
}