CSS-Style的三种方式

三种方式分别为external-style，embed-style和single-element-style。

测量与颜色

前两项为absolute-value，后两项为relative-value。

测量的单位

共有16种常用的用语义化的颜色名字。

CSS-Box的spacing,borders和背景

由margin，border和padding三个部分组成。

CSS的page-layout

三栏显示的页面布局

当前的工作机型为：

                                ..,   gaowei@alpha
                    ....,,:;+ccllll   ------------
      ...,,+:;  cllllllllllllllllll   OS: Windows 10 רҵ□□ x86_64
,cclllllllllll  lllllllllllllllllll   Host: TIMI RedmiBook 16
llllllllllllll  lllllllllllllllllll   Kernel: 10.0.19041
llllllllllllll  lllllllllllllllllll   Uptime: 15 hours, 28 mins
llllllllllllll  lllllllllllllllllll   Packages: 57 (scoop)
llllllllllllll  lllllllllllllllllll   Shell: bash 4.4.23
llllllllllllll  lllllllllllllllllll   Resolution: 1920x1080
                                      DE: Aero
llllllllllllll  lllllllllllllllllll   WM: Explorer
llllllllllllll  lllllllllllllllllll   WM Theme: Custom
llllllllllllll  lllllllllllllllllll   Terminal: Windows Terminal
llllllllllllll  lllllllllllllllllll   CPU: AMD Ryzen 5 4500U with Radeon Graphics (6) @ 2.370GHz
llllllllllllll  lllllllllllllllllll   Memory: 7321MiB / 15741MiB
`'ccllllllllll  lllllllllllllllllll
       `' *::  :ccllllllllllllllll
                       ````''*::cll