wffweb/src/main/java/com/webfirmframework/wffweb/css/css3/ColumnCount.java
public static boolean isValid(final String cssValue) {
        final String trimmedCssValue = TagStringUtil
                .toLowerCase(StringUtil.strip(cssValue));
        if (StringUtil.containsSpace(trimmedCssValue)) {
            return false;
        }
        try {
            final int parsedValue = Integer.parseInt(trimmedCssValue);

            return !(parsedValue == 0
                    && (StringUtil.containsMinus(trimmedCssValue)
                            || StringUtil.containsPlus(trimmedCssValue)));
        } catch (final NumberFormatException e) {
        }

        return PREDEFINED_CONSTANTS.contains(trimmedCssValue);
    }
public static boolean isValid(final String cssValue) {
        final String trimmedCssValue = TagStringUtil
                .toLowerCase(StringUtil.strip(cssValue));
        if (StringUtil.containsSpace(trimmedCssValue)) {
            return false;
        }
        try {
            final int parsedValue = Integer.parseInt(trimmedCssValue);

            return !(parsedValue == 0
                    && (StringUtil.containsMinus(trimmedCssValue)
                            || StringUtil.containsPlus(trimmedCssValue)));
        } catch (final NumberFormatException e) {
        }

        return PREDEFINED_CONSTANTS.contains(trimmedCssValue);
    }
validates if the given cssValue is valid for this class.

@param cssValue
the value to check.
@return true if valid and false if invalid.
@author WFF
@since 1.0.0