<div class="field">
<label class="label">Username</label>
<div class="control has-icons-left has-icons-right">
<input class="input is-success" type="text" placeholder="Text input" value="bulma">
<span class="icon is-small is-left">
<i class="fas fa-user"></i>
</span>
<span class="icon is-small is-right">
<i class="fas fa-check"></i>
</span>
</div>
<p class="help is-success">This username is available</p>
</div>