Anything that acts like a button should look like a button.
<button id="ctdl-ungoto-button" style="display:none" class="w3-bar-item w3-button" onclick="gotonext(0);">ungoto</button>
<button id="ctdl-skip-button" style="display:none" class="w3-bar-item w3-button" onclick="gotonext(1);">skip</button>
<button id="ctdl-goto-button" style="display:none" class="w3-bar-item w3-button" onclick="gotonext(2);">goto</button>
- <span id="lilo" class="w3-bar-item">Login</span>
+ <button id="lilo" class="w3-bar-item w3-button">Login</button>
</span>
</div>