Form Select

Default Select 
<select class="form-select" aria-label="Default select example">
    <option selected>Open this select menu
    </option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
Disabled Select 
<select class="form-select" aria-label="Disabled select example" disabled="">
    <option selected="">Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
Rounded Select 
<select class="form-select rounded-pill" aria-label="Default select example">
    <option selected>Open this select menu
    </option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
Multiple Attribute Select 
<select class="form-select" multiple="" aria-label="multiple select example">
    <option selected="">Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
Using Size Attribute 
<select class="form-select" size="4" aria-label="size 3 select example">
    <option selected="">Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
    <option value="4">Four</option>
    <option value="5">Five</option>
</select>
Select Sizes 
<select class="form-select form-select-sm mb-3" aria-label=".form-select-sm example">
    <option selected="">Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select><select class="form-select mb-3" aria-label="Default select">
    <option selected>Open this select menu
    </option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
<select class="form-select form-select-lg"
    aria-label=".form-select-lg example">
    <option selected="">Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>
Choices:
Multiple Select

Default

With Remove Button

Option groups

Passing Through Options
Options added via config with no search
Single Select

Default

Option groups

Email Address Only
Passing Unique Values