<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!Doctype html>
<html>
<head>
<style>
#autor{
color:white;
text-align:center;
margin-top:20px;
}
#titulo{ color:orange;
text-align:center;
margin-top:30px;
}
#imagens{
}
#estrela{ max-width:200px;
max-height:200px;
width: auto;
height: auto;
margin-left:100px;}
}
#principe{
max-width:500px;
max-height:500px;
width: auto;
height: auto;
float:right;
