Checkbox inputs

Add .form-check wrapper to your input and label to create a custom checkbox component. You can add .rounded-circle to the input to make it circular.
Block alignment
Inline alignment

Radio inputs

Add .form-check wrapper to your input and label to create a custom radio component. You can add .rounded-circle to change it to a rounded radio
Block alignment
Inline alignment

Switch radio and checkbox

A switch has the markup of a custom checkbox but uses .form-switch to render a toggle switch. Switches also support the disabled attribute
Switch checkbox
Switch Radio