<div id="block-user-0" class="block block-user">
  <h2>
    User login
  </h2>
  <div class="content">
    <form action="/node?destination=node" accept-charset=
    "UTF-8" method="post" id="user-login-form">
      <div>
        <div class="form-item" id="edit-name-wrapper">
          <label for="edit-name">Username: <span class=
          "form-required" title=
          "This field is required.">*</span></label>

          <input maxlength="60" name="name" id=
          "edit-name" size="15" value="" class=
          "form-text required" type="text" />
        </div>
        <div class="form-item" id="edit-pass-wrapper">
          <label for="edit-pass">Password: <span class=
          "form-required" title=
          "This field is required.">*</span></label>
          <input style=
          "font-weight: 500; font-style: normal; color: rgb(192, 192, 192);"
          name="pass" id="edit-pass" maxlength="60" size=
          "15" class="form-text required" type=
          "password" />
        </div><input name="op" id="edit-submit" value=
        "Log in" class="form-submit" type="submit" />
        <div class="item-list">
          <ul>

            <li class="first">
              <a href="/user/register" title=
              "Create a new user account.">Create new
              account</a>
            </li>
            <li class="last">
              <a href="/user/password" title=
              "Request new password via e-mail.">Request
              new password</a>
            </li>
          </ul>
        </div><input name="form_build_id" id=
        "form-a537122b9b9c867fb8cc8d8577e93ccb" value=
        "form-a537122b9b9c867fb8cc8d8577e93ccb" type=
        "hidden" /><input name="form_id" id=
        "edit-user-login-block" value="user_login_block"
        type="hidden" />

      </div>
    </form>
  </div>
</div>

Drupal User Login Block

drupal

HTML