title: Error to get css in express
body: <p>I've been getting the error bellow when I try to reach <a href="http://localhost:3000/contato/1" rel="nofollow noreferrer">http://localhost:3000/contato/1</a></p>
  
  <pre><code>GET http://localhost:3000/contato/static/bootstrap/dist/css/bootstrap.min.css 404 (Not Found)
  </code></pre>
  
  <p>Which is defined by this route:</p>
  
  <pre><code>app.route('/contato/:id')
      .get(autenticar, contatos.show);
  </code></pre>
  
  <p>In other routes that doesn't have :id param, the css is rendered fine.</p>
  
  <p>I'm using Pug to develop the pages, and serving static files through public folder, using:</p>
  
  <pre><code>app.use('/static', express.static(__dirname + '/public'));
  </code></pre>
  
  <p>My header.pug, which I extends in evey page.</p>
  
  <pre><code>doctype html
  html
  head
      link(href='static/bootstrap/dist/css/bootstrap.min.css' rel='stylesheet')
      meta(charset='utf-8')
      meta(name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no")
      title Ntalk - Agenda de Contatos
  body
      div(class='container')
          block content
  </code></pre>
  
  <p>The route who's getting the error:</p>
  
  <p>show.pug</p>
  
  <pre><code>include ../header
    block content
      div(class='row')
        div(class='col-md-6 offset-md-3')
          section(class='container')
            header
              h2 Ntalk - Dados do contato
  </code></pre>