JSFiddle - React, Tailwind, and code Playground
HTML
<form>
<select required>
<option value=""></option>
<option value="something">someting</option>
</select>
<input type="submit" />
</form>
<form>
<select required>
<option value=""></option>
<option value="something">someting</option>
</select>
<input type="submit" />
</form>