--- layout: page title: Containers --- Bootstrap requires a containing element to wrap site contents and house our grid system. Choose from the fixed or fluid width variation. Use `.container` for a responsive fixed width container. This will center content withing the viewport and apply the appropriate `width` for a given device size. **Containers *can* be nested, but be aware that most layouts don't require it.** {% highlight html %}
...
{% endhighlight %} Use `.container-fluid` for a full width container, spanning the entire width of the viewport. {% highlight html %}
...
{% endhighlight %}