<html>
<head>
<title>Minha loja</title>
<meta charset="utf-8">
<link href="css/bootstrap.css" rel="stylesheet" />
<link href="css/loja.css" rel="stylesheet" />
</head>
<body>
<div class="container">
<div class="principal">e
body {
padding-top: 50px;
}
.principal {
padding: 40px 15px;
text-align: center;
}