.PayPalCheckout .Button {
    background: url("/store/images/PayPalCheckout.png") no-repeat scroll 0 0 / 100% transparent !important;
}

.CheckoutOptionsButtons .CheckoutButton {
    background: url("/store/images/paypal-button-types.png") no-repeat scroll 0 0 / 100% transparent !important;
    width: 120px;
    text-indent: -9999px; /* Push text far off-screen */
    overflow: hidden;     /* Prevent scrollbars */
    white-space: nowrap;  /* Prevent text wrapping */
}