Changing the default behaviour of `.is-fluid` container: removing media breakpoint from the rule, so the behaviour is consistent with described in docs:
```
This container is fluid: it will have a 32px gap on either side, on any viewport size.
```
margin: 0 auto
position: relative
width: auto
+ &.is-fluid
+ margin-left: $gap
+ margin-right: $gap
+ max-width: none
+ width: auto
+desktop
max-width: $desktop - $container-offset
- &.is-fluid
- margin-left: $gap
- margin-right: $gap
- max-width: none
+until-widescreen
&.is-widescreen
max-width: $widescreen - $container-offset