Hi davout,
I have prepared a quick code snippet using the input-group element(https://www.htmlelements.com/demos/input-group/with-custom-elements/) for a base for the snippet:
<div class="input-group">
<smart-input class="form-control" placeholder="Recipient's username"></smart-input>
<div class="input-group-append">
<smart-button type="button">X</smart-button>
</div>
</div>
Let me know if that works for you!
Please, do not hesitate to contact us if you have any additional questions.
Best regards,
Yavor Dashev
Smart UI Team
https://www.htmlelements.com/