Fix checkbox display
Fix checkbox display

- set webkit-appearance to checkbox

MjAbuz/peoplefinder,heathd/moj_peoplefinder,ministryofjustice/peoplefinder,ministryofjustice/peoplefinder,ministryofjustice/peoplefinder,ministryofjustice/peoplefinder,MjAbuz/peoplefinder,MjAbuz/peoplefinder,ministryofjustice/peoplefinder,MjAbuz/peoplefinder,heathd/moj_peoplefinder