background background: (1)url(image1.png) right bottom, (2)url(image2.png) center, (3)url(image3.png) (4)rgba( 0,0,0,0.35) (1)The first background image. This is the image that is closest to the viewer. Every background image can have the general val
CSS3 Rounded Corners The border-radius property is a shorthand property for setting the four border-*-radius properties. syntax border-radius: 1-4 length|% / 1-4 length|%|initial|inherit; Property Description border-radius A shorthand property for se
1.盒模型 网页设计中常听的属性名:内容(content).填充(padding).边框(border).边界(margin), CSS盒子模式都具备这些属性. 这些属性我们可以用日常生活中的常见事物--盒子作一个比喻来理解,所以叫它盒子模式. 2.盒模型分为:标准盒模型和非标准盒模型 当你用编辑器新建一个html页面的时候你一定会发现最顶上都会有一个DOCTYPE标签,例如: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitiona