
        </div>
        <div>
          <input name="num-digits" maxlength="1" type="text" data-bind="value: numDigitsText, valueUpdate: 'afterkeydown'" pattern="[2-8]" required />
        </div>
        <div><input type="submit" value="Start!"></div>
        </form>
        </div>
      </div>
      <div id="step2">
        <h1>Step 2: We guess it.</h1>
        <p>You tell us how many digits are correct and in the correct position.</p>
        <div id="current-guess" data-bind="style: { display: divShown()