custom Border Not work on mobile

Hello 

we have added custom border on  canvas  as you can see in product link 
https://vedika.digitalappfactory.com/product/custom-nets-flashpay-card-landscape/

this is work on desktop  as you can see in image screen-shot. Border show on image  

https://vedika.digitalappfactory.com/wp-content/uploads/2019/12/25.png

but on mobile  Border  goes behind  the image as you can see image
https://vedika.digitalappfactory.com/wp-content/uploads/2019/12/24.png

please provide some solution so we can show Border  on  image  on mobile.

we want only show border only on canvas.  we do not want disply when  download or add to cart product

please help

Thank you

we want  to show  Border  only on