Please replace the previous code snippet with the CSS code below.

.woocommerce-info .aw-unsubscribe p:last-child,
.woocommerce-message .aw-unsubscribe.confirmed p{
	margin-bottom: 0;
}

.woocommerce-info .aw-unsubscribe .button {
	display: inline-block;
	text-decoration: none;
}

Regards