What class id is applepay button to add a border around it?

[styllair]

Im trying to add a border around my applepay button as it has little visibility due to my black background, this is my code to add a border to my buy now button, but i cant seem to do the same for the applepay one that only shows up on my phone

code to add border to buy now button:

#_rsi-buy-now-button {
position: relative;
}

#_rsi-buy-now-button:after {
position: absolute;
border: 2px solid #e9c8dc;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
content: "";
}

ive gotten solutions like 

<style> #zoid-paypal-buttons-uid_fadab4c35e_mtu6mda6mjc { border: 2px solid rgb(190, 22, 102) !important; border-radius: 2px; } </style>

and not only does this not add a border to the paypal one, not on the apple pay either, id really appreciate any help! thanks alot