docs: public static Condition cssValue(final String propertyName, final String expectedValue) {
      return new Condition("cssValue") {
        @Override
        public boolean apply(Driver driver, WebElement element) {
          String actualValue = element.getCssValue(propertyName);
          return defaultString(expectedValue).equalsIgnoreCase(defaultString(actualValue));
        }
  
        @Override
        public String actualValue(Driver driver, WebElement element) {
          return element.getCssValue(propertyName);
        }
  
        @Override
        public String toString() {
          return name + " " + propertyName + '=' + expectedValue;
        }
      };
    }