Web site send message

When i post a Message from my web page it returns a ? in the browser such as this,

I believe both the HTML and the php to be correct The html......

`enter code here`     
<form class="form-horizontal">
                <fieldset>
                  <div class="form-group is-empty">
                    <label for="Name" class="col-md-2 control-     label">Name</label>
                    <div class="col-md-10">
                      <input type="text" class="form-control" id="Name" placeholder="Name">
                    </div>
                  </div>
                  <div class="form-group is-empty">
                    <label for="Email" class="col-md-2 control-label">Email</label>
                    <div class="col-md-10">
                      <input type="email" class="form-control" id="Email" placeholder="Email">
                    </div>
                  </div>
                  <div class="form-group is-empty">
                    <label for="Message" class="col-md-2 control-label">Message</label>
                    <div class="col-md-10">
                      <input type="text" class="form-control" id="Message" placeholder="Message">
                    </div>
                  </div>

                  <div class="form-group">
                  <form action="sendcontact.php" method="post">
                    <div class="col-md-10 col-md-offset-2">
                      <button type="submit">Send Message</button>
                    </div>
                  </div>

                </fieldset>
              </form>
            </div>
          </div>
        </div>
      </section>
enter code here