CSS box border (border) style comprehensive style

CSS box border (border)

• grammar:

border : border-width ll border-style ll border-color

• Border style:

					none:没有边框即忽略所有边框的宽度（默认值)
					solid:边框为单实线(最为常用的)
					dashed:边框为虚线
					dotted:边框为点线

• E.g:

border: 1px solid red;没有顺序

Box border writing summary table

In many cases, we do not need to specify 4 borders, we can specify the 4 borders separately.