Use .required
class with .form-label
or any custom element to indicate input's mandatory status:
Use .form-select-solid
class with .form-select
to set solid background style for a form select:
<select class="form-select" aria-label="Select example">
<option>Open this select menu</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</select>
Use .form-range
class with .form-select
to set solid background style for a form select: