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39 lines
1.5 KiB
Markdown
39 lines
1.5 KiB
Markdown
---
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title: Values
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introduction: >
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Sass supports a number of value types, most of which come straight from CSS.
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Every [expression](/documentation/syntax/structure#expressions) produces a
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value, [variables](/documentation/variables) hold values. Most value types
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come straight from CSS:
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---
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* [Numbers](/documentation/values/numbers), which may or may not have units,
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like `12` or `100px`.
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* [Strings](/documentation/values/strings), which may or may not have quotes,
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like `"Helvetica Neue"` or `bold`.
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* [Colors](/documentation/values/colors), which can be referred to by their hex
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representation or by name, like `#c6538c` or `blue`, or returned from
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functions, like `rgb(107, 113, 127)` or `hsl(210, 100%, 20%)`.
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* [Lists of values](/documentation/values/lists), which may be separated by
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spaces or commas and which may be enclosed in square brackets or no brackets
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at all, like `1.5em 1em 0 2em`, `Helvetica, Arial, sans-serif`, or
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`[col1-start]`.
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A few more are specific to Sass:
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* The [boolean](/documentation/values/booleans) values `true` and `false`.
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* The singleton [`null`](/documentation/values/null) value.
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* [Maps](/documentation/values/maps) that associate values with keys, like
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`("background": red, "foreground": pink)`.
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* [Function references](/documentation/values/functions) returned by
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[`get-function()`][] and called with [`call()`][].
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[`get-function()`]: /documentation/modules/meta#get-function
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[`call()`]: /documentation/modules/meta#call
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