1. # outer-wrapper or # outer-wrap or # outer
2. # header-wrapper and # header or # header-wrap
3. # content # content-wrapper or wrap or # content
4. # main-wrapper or main-wrap or # main
5. # sidebar-wrapper or # sidebar-wrap or # sidebar, there is also # lsidebar (l = left) and # rsidebar (r = right)
(The names of the relative nature)
You will see the declaration appended to it, for example:2. # header-wrapper and # header or # header-wrap
3. # content # content-wrapper or wrap or # content
4. # main-wrapper or main-wrap or # main
5. # sidebar-wrapper or # sidebar-wrap or # sidebar, there is also # lsidebar (l = left) and # rsidebar (r = right)
(The names of the relative nature)
# outer-wrapper {width: 960px; margin: 0 10px 0; border: 3px solid # 666666, …… and so on}background (color or image / image), margin, padding, border, width, height (for header)