说明：  5日精通css层叠样式表(CHM)什么是层叠样式表,如何建立样式,创建并引用样式类,字体与文本属性,颜色与图像属性,边框属性,滚动条属性,方块属性,滤镜,其它属性
(proficient on the 5th css etc style sheet (CHM) What is extraordinarily high, how to establish a pattern, Create and use patterns category, and the text font attributes, color and image attributes, frame attributes, and rolling of the attributes box attributes, filter, and other attributes )