Hi anna tang,
To hide the blue button, you need to apply this CSS rule in your application:
<div>
<div>.smart-kanban-add-new-button[add-new-button] {</div>
<div> display: none !important;</div>
<div>}</div>
</div>
<div></div>
<div>You can have a look at the example here: https://stackblitz.com/edit/github-zhzwd1?file=src%2Findex.html</div>
<div></div>
<div>If you have any other questions, please do not hesitate to contact us again!
Best Regards,
Ivan Peevski
Smart UI Team
https://www.htmlelements.com/</div>
<div></div>
<div></div>
.
