Selectors

Selectors are used to define which instances a rule is responsible for styling:

Name	Specifier	Description
Class Selector	n/a	Styles instances with a specific class name.
Name Selector	#	Styles instances which have a specific name.
Tag Selector	.	Styles instances which have a specific tag.
State Selector	:	Styles instances which have a specific state active (e.g. hover).
Psuedo Selector	::	Creates a new instance of a specific class name.

Examples

TextButton {}
#CoolElement {}
.MyTag {}
:hover {}
::UIPadding {}

Unnecessary Nesting

You can put selectors next to each other to avoid unnecessary nesting of rules:

After

TextButton ::UICorner {

}

Before

TextButton {
    ::UICorner {

    }
}

Multiple Selectors

You can apply the same rule to multiple selectors by using a comma separated list (note that this will still compile to three distinct style rule instances):

After

TextButton, TextLabel, ImageButton ::UICorner {
    Size = udim2 (.5, .5);
    Position = udim2 (.5, .5)
}

Before

TextButton {
    Size = udim2 (.5, .5);
    Position = udim2 (.5, .5)
}

TextLabel {
    Size = udim2 (.5, .5);
    Position = udim2 (.5, .5)
}

ImageButton ::UICorner {
    Size = udim2 (.5, .5);
    Position = udim2 (.5, .5)
}

Select Children And Descendants

> can be used to select children, and >> can be used to select descendants.

-- Selects all Instances with the class `TextLabel`
-- that are children of `ImageButton` Instances.
ImageButton > TextLabel {

}

-- Selects all Instances with the class `TextLabel`
-- that are descendants of `ImageButton` Instances.
ImageButton >> TextLabel {

}

#FooBar {
    -- Selects all Instances called `Baz`
    -- that are children of Instances called `FooBar`.
    > #Baz {

    }

}