This might help you.
{!! Form::open(['route' => 'posts.store','data-parsley-validate'=>'']) !!}
{{Form :: label('title','Title:')}}
{{Form:: text('title',null,array('class'=>'form-control','required'=>'','max length'=>'255'))}}
{{Form :: label('slug','Slug:')}}
{{Form::text('slug',null,["class"=>'form-control','required'=>'','min length'=>'5','max length'=>'255'])}}
{{Form::label('body','Post Body:')}}
{{Form::textarea('body',null,array('class'=>'form-control','required'=>''))}}
{{Form::submit('Create Post',array('class'=>'btn btn-success btn-block','style'=>'margin-top:20px;'))}}
{!! Form::close() !!}