https://toyhou.se/11183783.password-protected-code
<div class="tab-content">
<div class="tab-pane show active" id="Tab" style="text-align: center;">
<p style="text-align: center;">Enter the password:</p>
<br><a class="btn btn-primary" data-toggle="tab" href="#Tab">1</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">2</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">3</a>
<br><br><a class="btn btn-primary" data-toggle="tab" href="#Tab">4</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">5</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">6</a>
<br><br><a class="btn btn-primary" data-toggle="tab" href="#Tab">7</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">8</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">9</a>
<br><br><a class="btn btn-primary" data-toggle="tab" href="#Tab">*</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">0</a> <a class="btn btn-primary" data-toggle="tab" href="#Tab">#</a></div>
<div class="tab-pane show" id="Success">This will show up when the password is entered sucessfully</div>
</div>