Styling the email that is sent to customer

;email content ORDER_STATUS_NOTIFICATION_SUBJECT="Your order No. %s is now %s at %s" ORDER_CREATION_NOTIFICATION_SUBJECT="Your order No. %s is now %s at %s" ORDER_NOTIFICATION_SUBJECT="Your order No. %s at %s" USER_ACCOUNT_SUBJECT="Account details for %s at %s" CRON_REPORT_SUBJECT="Your cron has been triggered" DATE_ON_WEBSITE="The %s at %s" ORDER_STATUS_CHANGED_TO="The status of your order No. %s has been changed to %s." HI_CUSTOMER="Hi %s," ORDER_CREATION_SUCCESS_ON_WEBSITE_AT_DATE="We are pleased to confirm the creation of your order No. %s at %s on the %s at %s" YOUR_ORDER="Your order" SUMMARY_OF_YOUR_ORDER="Summary of your order" TOTAL_WITHOUT_VAT="TOTAL without VAT : %s" TOTAL_WITH_VAT="TOTAL with VAT : %s" ORDER_TOTAL_WITHOUT_VAT="TOTAL without VAT" ORDER_TOTAL_WITH_VAT="TOTAL with VAT" ORDER_VALID_AFTER_PAYMENT="Your order will be processed as soon as your payment is received." THANK_YOU_FOR_YOUR_ORDER="Once again, thank you for your order at %s. We hope to see you again soon." THANK_YOU_FOR_YOUR_ORDER_BEGIN="Thank you for your order at %s." THANK_YOU_FOR_REGISTERING="Thank you for registering at %s." ACCOUNT_MUST_BE_ACTIVATED="Your account must be activated by clicking on the link below. You will then be able to continue your order." YOU_CAN_LOG_IN_WITH="You can log in the website with the following username and password." BEST_REGARDS_CUSTOMER="Best regards,<br/>%s" NEW_ORDER_SUBJECT="New order No. %s created on %s" HIKASHOP_MAIL_HEADER="If you don't see this email properly, click here to see your order details"