    001    package org.apache.tapestry5;
    002
    003    /**
    004     * Constants used when rendering a CSS class attribute.
    005     */
    006    public class CSSClassConstants
    007    {
    008        /**
    009         * CSS class name that causes a rendered element to be invisible on the client side.
    010         */
    011        public static final String INVISIBLE = "t-invisible";
    012        /**
    013         * All purpose CSS class name for anything related to Tapestry errors.
    014         */
    015        public static final String ERROR = "t-error";
    016        /**
    017         * CSS class name for individual validation errors.
    018         *
    019         * @since 5.2.0
    020         */
    021        public static final String ERROR_SINGLE = "t-error-single";
    022    }