pnull

@font-face {
    font-family: 'EntypoRegular';
    src: url('font/entypo.eot');
    src: url('font/entypo.eot?#iefix') format('embedded-opentype'),
         url('font/entypo.woff') format('woff'),
         url('font/entypo.ttf') format('truetype'),
         url('font/entypo.svg#EntypoRegular') format('svg');
    font-weight: normal;
    font-style: normal;
}

pippinsplugins

<a href="<?php echo add_query_arg( array( 'edd_action' => 'add_to_cart', 'download_id' => get_the_ID() ), edd_get_checkout_uri() ); ?>">Add to Cart</a>