Button

All Color option is dynamic and you can insert your own Color Values

Small Rounded + Shadow Small Square + Shadow Medium Rounded + Shadow Medium Square + Shadow Large Rounded + Shadow Large Square + Shadow

 

Small Rounded Small Square Medium Rounded Medium Square Large Rounded Large Square

 

Small Bordered Rounded Small Bordered Square Medium Bordered Rounded Medium Bordered Square Large Bordered Rounded Large Bordered Square

There is no widget. You should add your widgets into Shortcodes sidebar area on Appearance => Widgets of your dashboard.