Select

Customize the native «select» with custom CSS that changes the element’s initial appearance.

Bootstrap Select

Basic Select

Use .form-select class for basic select control.

Disabled Select

Use disabled attribute for disabled select control.

Input Group Select

Basic Select with Input Group
Input group append

Choices

Click here for more information
Basic Choices

Use .choices class for basic choices control.

Single Select with Label

Use optgroup attribute for basic choices with Label control.

Multiple choices

Basic Multiple choices

Use .choices class for basic choices control. Use multiple="multiple" attribute for multiple select box.

Multiple Select with Label

Use optgroup attribute for multiple select box with Label control.

Multiple Select with Remove Button

Use .multiple-remove attribute for multiple select box with remove button.

choices with Light Background Options

Use .select-light-{colorName} class for light background to selected Options.