.woocommerce span.soldout, .woocommerce-page span.soldout { width: 0px; height: 0px; border-top: 0px solid transparent; border-bottom: 100px solid transparent; border-right: 100px solid #d00; white-space: nowrap; position: absolute; top: 0; right: 0;
    
}
.woocommerce span.soldout span, .woocommerce-page span.soldout span { transform: rotate(45deg); -webkit-transform: rotate(45deg); display: block; position: absolute; top: 24px; right: -100px; white-space: nowrap; text-transform: uppercase; font-family: "Prompt", sans-serif; font-weight: bold; font-size: 1.1em; }