<!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">
<!-- As 3 meta tags acima *devem* vir em primeiro lugar dentro do 'head'; qualquer outro conteúdo deve vir *após* essas tags -->
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- HTML5 shim e Respond.js para suporte no IE8 de elementos HTML5 e media queries -->
<!-- ALERTA: Respond.js não funciona se você visualizar uma página file:// -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script><scriptsrc="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<h1>Olá, mundo!</h1>
<div class="panel panel-default">
<div class="panel-heading">Panel heading without title</div>
<div class="panel-body">
Panel content
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">Panel title</h3>
</div>
<div class="panel-body">
Panel content
</div>
</div>
<!-- jQuery (obrigatório para plugins JavaScript do Bootstrap) -->
<script src="bootstrap/js/jquery.min.js"></script>
<!-- Inclui todos os plugins compilados (abaixo), ou inclua arquivos separadados se necessário -->
<script src="bootstrap/js/bootstrap.min.js"></script>
</body>
</html>
The code left in the navigator as if it had been written normal, without any stylization, only the panel-title was common larger size. Why did this happen? I need to install something else, I use sublime text 3 to write and test in mozilla and chrome.