<button type="submit" 
class="inline-flex justify-center py-2 px-4 border border-transparent shadow-sm text-sm font-medium rounded-md   focus:outline-none focus:ring-2 focus:ring-offset-2  
{{ isset($class) && $class!='' ? $class : 'text-white bg-indigo-600 hover:bg-indigo-700 focus:ring-indigo-500' }} ">
    {{ $value }}
</button>