其中，左右分別為100px，中間自適應。
html **:
class
="left"
>
leftdiv
>
class
="right"
>
rightdiv
>
class
="center"
>
centerdiv
>
css **:
.container-float > div
.container-float > .left
.container-float > .center
.container-float > .right
class
="container-absolute"
>
class
="left"
>
leftdiv
>
class
="center"
>
centerdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-absolute
.container-absolute > div
.container-absolute .left
.container-absolute .center
.container-absolute .right
class
="container-flex"
>
class
="left"
>
leftdiv
>
class
="center"
>
centerdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-flex
.container-flex > div
.container-flex .left
.container-flex .center
.container-flex .right
class
="container-table"
>
class
="left"
>
leftdiv
>
class
="center"
>
centerdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-table
.container-table > div
.container-table .left
.container-table .center
.container-table .right
class
="container-grid"
>
class
="left"
>
leftdiv
>
class
="center"
>
centerdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-grid
.container-grid .left
.container-grid .center
.container-grid .right
class
="container-shengbei"
>
class
="left"
>
leftdiv
>
class
="center"
>
centerdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-shengbei
.container-shengbei > div
.container-shengbei .left
.container-shengbei .center
.container-shengbei .right
class
="container-shuangfei"
>
class
="center"
>
class
="inner"
>
centerdiv
>
div>
class
="left"
>
leftdiv
>
class
="right"
>
rightdiv
>
div>
css **:
.container-shuangfei
.container-shuangfei > div
.container-shuangfei .left
.container-shuangfei .center
.container-shuangfei .center .inner
.container-shuangfei .right
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