I would like to customise the Apple-Pay button that comes with Woocommerce/Stripe. By default the button has a 4px border-radius, which I would like to change to 0px. Additionally the button is within a wrapper and I would like to change its padding-top to 0px. I wonder if this can be amended through CSS? Below is the source HTML code (any hint as to how to progress would be greatly appreciated).
<div id="wc-stripe-payment-request-wrapper" style="clear:both;padding-top:1.5em;display:none;">
<div id="wc-stripe-payment-request-button" " class="StripeElement">
<!-- A Stripe Element will be inserted here. -->
</div>
</div>