remove that, the example comes first now

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Mark Otto 2017-09-30 15:36:05 -07:00 committed by Mark Otto
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@ -47,8 +47,6 @@ Breaking it down, here's how it works:
Be aware of the limitations and [bugs around flexbox](https://github.com/philipwalton/flexbugs), like the [inability to use some HTML elements as flex containers](https://github.com/philipwalton/flexbugs#9-some-html-elements-cant-be-flex-containers).
Sounds good? Great, let's move on to seeing all that in an example.
## Grid options
While Bootstrap uses `em`s or `rem`s for defining most sizes, `px`s are used for grid breakpoints and container widths. This is because the viewport width is in pixels and does not change with the [font size](https://drafts.csswg.org/mediaqueries-3/#units).