sign in form using Bootstrap

sign_in.html

  <div class="container">
    <div class="row">
      <div class="span4 columns">
        &nbsp;
      </div>

      <div class="span8 columns">
        <form accept-charset="UTF-8" action="/users/sign_in" class="user_new" id=
        "user_new" method="post" name="user_new">
          <div style="margin:0;padding:0;display:inline">
            <input name="utf8" type="hidden" value="&#10003;"><input name=
            "authenticity_token" type="hidden" value=
            "X6L21cGwIEgwcElBA+EVJ90xwCQ9KdsI7yndrxo+k5A=">
          </div>

          <fieldset>
            <legend>Sign In</legend>

            <div class="clearfix">
              <label for="user_email">E-mail Address</label>

              <div class="input">
                <input class=".span4" id="user_email" name="user[email]" size="30" type=
                "email" value="">
              </div>
            </div>

            <div class="clearfix">
              <label for="user_password">Password</label>

              <div class="input">
                <div class="input-append">
                  <input class=".span3" id="user_password" name="user[password]" size=
                  "30" type="password"><label class="add-on">Save<input checked="checked"
                  class="span1" id="user_remember_me" name="user[remember_me]" type=
                  "checkbox" value="1"></label>
                </div>
              </div>
            </div>

            <div class="actions">
              <input class="btn primary" name="commit" type="submit" value="Sign in">
            </div>
          </fieldset>
        </form><a href="/users/password/new">Forgot your password?</a><br>
      </div>

      <div class="span4 columns">
        &nbsp;
      </div>
    </div>
  </div>

here's a screenshot: https://skitch.com/drewda/gqxar/bootstrap-sign-in-form