2. How to create CssFile for dynamic css

A css file can be created by extending CssFile class, please check the below sample

import java.util.Set;

import com.webfirmframework.wffweb.css.BackgroundRepeat;
import com.webfirmframework.wffweb.css.ListStylePosition;
import com.webfirmframework.wffweb.css.core.CssProperty;

@SuppressWarnings("serial")
public class CssFileSample1 extends CssFile {

    public CssFileSample1() {
    }

    // to exclude this block of styles
    @ExcludeCssBlock
    private final CssBlock cssBlock5 = new CssBlock(".test5-class") {

        @Override
        protected void load(final Set<CssProperty> cssProperties) {
            cssProperties.add(ListStylePosition.INSIDE);
        }
    };

    private final CssBlock cssBlock6 = new CssBlock(".test4-class") {

        @Override
        protected void load(final Set<CssProperty> cssProperties) {
            cssProperties.add(BackgroundRepeat.NO_REPEAT);
            cssProperties.add(ListStylePosition.OUTSIDE);
        }
    };

    @Override
    public String toString() {
        return "CssFileSample1";
    }
}

the following code

public static void main(String[] args) {
    final CssFileSample1 cssFileSample1 = new CssFileSample1();
    final String cssString = cssFileSample1.toCssString();
    System.out.println(cssString);
}

will print

.test4-class {
    background-repeat: no-repeat;
    list-style-position: outside;
}

(Note: The generated css will be minified, here we formatted it for readability)