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assets/sass/libs/_breakpoints.scss

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+// breakpoints.scss v1.0 | @ajlkn | MIT licensed */
+
+// Vars.
+
+	/// Breakpoints.
+	/// @var {list}
+	$breakpoints: () !global;
+
+// Mixins.
+
+	/// Sets breakpoints.
+	/// @param {map} $x Breakpoints.
+	@mixin breakpoints($x: ()) {
+		$breakpoints: $x !global;
+	}
+
+	/// Wraps @content in a @media block targeting a specific orientation.
+	/// @param {string} $orientation Orientation.
+	@mixin orientation($orientation) {
+		@media screen and (orientation: #{$orientation}) {
+			@content;
+		}
+	}
+
+	/// Wraps @content in a @media block using a given query.
+	/// @param {string} $query Query.
+	@mixin breakpoint($query: null) {
+
+		$breakpoint: null;
+		$op: null;
+		$media: null;
+
+		// Determine operator, breakpoint.
+
+			// Greater than or equal.
+				@if (str-slice($query, 0, 2) == '>=') {
+
+					$op: 'gte';
+					$breakpoint: str-slice($query, 3);
+
+				}
+
+			// Less than or equal.
+				@elseif (str-slice($query, 0, 2) == '<=') {
+
+					$op: 'lte';
+					$breakpoint: str-slice($query, 3);
+
+				}
+
+			// Greater than.
+				@elseif (str-slice($query, 0, 1) == '>') {
+
+					$op: 'gt';
+					$breakpoint: str-slice($query, 2);
+
+				}
+
+			// Less than.
+				@elseif (str-slice($query, 0, 1) == '<') {
+
+					$op: 'lt';
+					$breakpoint: str-slice($query, 2);
+
+				}
+
+			// Not.
+				@elseif (str-slice($query, 0, 1) == '!') {
+
+					$op: 'not';
+					$breakpoint: str-slice($query, 2);
+
+				}
+
+			// Equal.
+				@else {
+
+					$op: 'eq';
+					$breakpoint: $query;
+
+				}
+
+		// Build media.
+			@if ($breakpoint and map-has-key($breakpoints, $breakpoint)) {
+
+				$a: map-get($breakpoints, $breakpoint);
+
+				// Range.
+					@if (type-of($a) == 'list') {
+
+						$x: nth($a, 1);
+						$y: nth($a, 2);
+
+						// Max only.
+							@if ($x == null) {
+
+								// Greater than or equal (>= 0 / anything)
+									@if ($op == 'gte') {
+										$media: 'screen';
+									}
+
+								// Less than or equal (<= y)
+									@elseif ($op == 'lte') {
+										$media: 'screen and (max-width: ' + $y + ')';
+									}
+
+								// Greater than (> y)
+									@elseif ($op == 'gt') {
+										$media: 'screen and (min-width: ' + ($y + 1) + ')';
+									}
+
+								// Less than (< 0 / invalid)
+									@elseif ($op == 'lt') {
+										$media: 'screen and (max-width: -1px)';
+									}
+
+								// Not (> y)
+									@elseif ($op == 'not') {
+										$media: 'screen and (min-width: ' + ($y + 1) + ')';
+									}
+
+								// Equal (<= y)
+									@else {
+										$media: 'screen and (max-width: ' + $y + ')';
+									}
+
+							}
+
+						// Min only.
+							@else if ($y == null) {
+
+								// Greater than or equal (>= x)
+									@if ($op == 'gte') {
+										$media: 'screen and (min-width: ' + $x + ')';
+									}
+
+								// Less than or equal (<= inf / anything)
+									@elseif ($op == 'lte') {
+										$media: 'screen';
+									}
+
+								// Greater than (> inf / invalid)
+									@elseif ($op == 'gt') {
+										$media: 'screen and (max-width: -1px)';
+									}
+
+								// Less than (< x)
+									@elseif ($op == 'lt') {
+										$media: 'screen and (max-width: ' + ($x - 1) + ')';
+									}
+
+								// Not (< x)
+									@elseif ($op == 'not') {
+										$media: 'screen and (max-width: ' + ($x - 1) + ')';
+									}
+
+								// Equal (>= x)
+									@else {
+										$media: 'screen and (min-width: ' + $x + ')';
+									}
+
+							}
+
+						// Min and max.
+							@else {
+
+								// Greater than or equal (>= x)
+									@if ($op == 'gte') {
+										$media: 'screen and (min-width: ' + $x + ')';
+									}
+
+								// Less than or equal (<= y)
+									@elseif ($op == 'lte') {
+										$media: 'screen and (max-width: ' + $y + ')';
+									}
+
+								// Greater than (> y)
+									@elseif ($op == 'gt') {
+										$media: 'screen and (min-width: ' + ($y + 1) + ')';
+									}
+
+								// Less than (< x)
+									@elseif ($op == 'lt') {
+										$media: 'screen and (max-width: ' + ($x - 1) + ')';
+									}
+
+								// Not (< x and > y)
+									@elseif ($op == 'not') {
+										$media: 'screen and (max-width: ' + ($x - 1) + '), screen and (min-width: ' + ($y + 1) + ')';
+									}
+
+								// Equal (>= x and <= y)
+									@else {
+										$media: 'screen and (min-width: ' + $x + ') and (max-width: ' + $y + ')';
+									}
+
+							}
+
+					}
+
+				// String.
+					@else {
+
+						// Missing a media type? Prefix with "screen".
+							@if (str-slice($a, 0, 1) == '(') {
+								$media: 'screen and ' + $a;
+							}
+
+						// Otherwise, use as-is.
+							@else {
+								$media: $a;
+							}
+
+					}
+
+			}
+
+		// Output.
+	        @media #{$media} {
+				@content;
+			}
+
+	}

assets/sass/libs/_functions.scss

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+/// Removes a specific item from a list.
+/// @author Hugo Giraudel
+/// @param {list} $list List.
+/// @param {integer} $index Index.
+/// @return {list} Updated list.
+@function remove-nth($list, $index) {
+
+	$result: null;
+
+	@if type-of($index) != number {
+		@warn "$index: #{quote($index)} is not a number for `remove-nth`.";
+	}
+	@else if $index == 0 {
+		@warn "List index 0 must be a non-zero integer for `remove-nth`.";
+	}
+	@else if abs($index) > length($list) {
+		@warn "List index is #{$index} but list is only #{length($list)} item long for `remove-nth`.";
+	}
+	@else {
+
+		$result: ();
+		$index: if($index < 0, length($list) + $index + 1, $index);
+
+		@for $i from 1 through length($list) {
+
+			@if $i != $index {
+				$result: append($result, nth($list, $i));
+			}
+
+		}
+
+	}
+
+	@return $result;
+
+}
+
+/// Gets a value from a map.
+/// @author Hugo Giraudel
+/// @param {map} $map Map.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function val($map, $keys...) {
+
+	@if nth($keys, 1) == null {
+		$keys: remove-nth($keys, 1);
+	}
+
+	@each $key in $keys {
+		$map: map-get($map, $key);
+	}
+
+	@return $map;
+
+}
+
+/// Gets a duration value.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function _duration($keys...) {
+	@return val($duration, $keys...);
+}
+
+/// Gets a font value.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function _font($keys...) {
+	@return val($font, $keys...);
+}
+
+/// Gets a misc value.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function _misc($keys...) {
+	@return val($misc, $keys...);
+}
+
+/// Gets a palette value.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function _palette($keys...) {
+	@return val($palette, $keys...);
+}
+
+/// Gets a size value.
+/// @param {string} $keys Key(s).
+/// @return {string} Value.
+@function _size($keys...) {
+	@return val($size, $keys...);
+}

assets/sass/libs/_html-grid.scss

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+// html-grid.scss v1.0 | @ajlkn | MIT licensed */
+
+// Mixins.
+
+	/// Initializes the current element as an HTML grid.
+	/// @param {mixed} $gutters Gutters (either a single number to set both column/row gutters, or a list to set them individually).
+	/// @param {mixed} $suffix Column class suffix (optional; either a single suffix or a list).
+	@mixin html-grid($gutters: 1.5em, $suffix: '') {
+
+		// Initialize.
+			$cols: 12;
+			$multipliers: 0, 0.25, 0.5, 1, 1.50, 2.00;
+			$unit: 100% / $cols;
+
+			// Suffixes.
+				$suffixes: null;
+
+				@if (type-of($suffix) == 'list') {
+					$suffixes: $suffix;
+				}
+				@else {
+					$suffixes: ($suffix);
+				}
+
+			// Gutters.
+				$guttersCols: null;
+				$guttersRows: null;
+
+				@if (type-of($gutters) == 'list') {
+
+					$guttersCols: nth($gutters, 1);
+					$guttersRows: nth($gutters, 2);
+
+				}
+				@else {
+
+					$guttersCols: $gutters;
+					$guttersRows: 0;
+
+				}
+
+		// Row.
+			display: flex;
+			flex-wrap: wrap;
+			box-sizing: border-box;
+			align-items: stretch;
+
+			// Columns.
+				> * {
+					box-sizing: border-box;
+				}
+
+			// Gutters.
+				&.gtr-uniform {
+					> * {
+						> :last-child {
+							margin-bottom: 0;
+						}
+					}
+				}
+
+			// Alignment.
+				&.aln-left {
+					justify-content: flex-start;
+				}
+
+				&.aln-center {
+					justify-content: center;
+				}
+
+				&.aln-right {
+					justify-content: flex-end;
+				}
+
+				&.aln-top {
+					align-items: flex-start;
+				}
+
+				&.aln-middle {
+					align-items: center;
+				}
+
+				&.aln-bottom {
+					align-items: flex-end;
+				}
+
+		// Step through suffixes.
+			@each $suffix in $suffixes {
+
+				// Suffix.
+					@if ($suffix != '') {
+						$suffix: '-' + $suffix;
+					}
+					@else {
+						$suffix: '';
+					}
+
+				// Row.
+
+					// Important.
+						> .imp#{$suffix} {
+							order: -1;
+						}
+
+					// Columns, offsets.
+						@for $i from 1 through $cols {
+							> .col-#{$i}#{$suffix} {
+								width: $unit * $i;
+							}
+
+							> .off-#{$i}#{$suffix} {
+								margin-left: $unit * $i;
+							}
+						}
+
+					// Step through multipliers.
+						@each $multiplier in $multipliers {
+
+							// Gutters.
+								$class: null;
+
+								@if ($multiplier != 1) {
+									$class: '.gtr-' + ($multiplier * 100);
+								}
+
+								&#{$class} {
+									margin-top: ($guttersRows * $multiplier * -1);
+									margin-left: ($guttersCols * $multiplier * -1);
+
+									> * {
+										padding: ($guttersRows * $multiplier) 0 0 ($guttersCols * $multiplier);
+									}
+
+									// Uniform.
+										&.gtr-uniform {
+											margin-top: $guttersCols * $multiplier * -1;
+
+											> * {
+												padding-top: $guttersCols * $multiplier;
+											}
+										}
+
+								}
+
+						}
+
+			}
+
+	}

assets/sass/libs/_mixins.scss

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+/// Makes an element's :before pseudoelement a FontAwesome icon.
+/// @param {string} $content Optional content value to use.
+/// @param {string} $category Optional category to use.
+/// @param {string} $where Optional pseudoelement to target (before or after).
+@mixin icon($content: false, $category: regular, $where: before) {
+
+	text-decoration: none;
+
+	&:#{$where} {
+
+		@if $content {
+			content: $content;
+		}
+
+		-moz-osx-font-smoothing: grayscale;
+		-webkit-font-smoothing: antialiased;
+		display: inline-block;
+		font-style: normal;
+		font-variant: normal;
+		text-rendering: auto;
+		line-height: 1;
+		text-transform: none !important;
+
+		@if ($category == brands) {
+			font-family: 'Font Awesome 5 Brands';
+		}
+		@elseif ($category == solid) {
+			font-family: 'Font Awesome 5 Free';
+			font-weight: 900;
+		}
+		@else {
+			font-family: 'Font Awesome 5 Free';
+			font-weight: 400;
+		}
+
+	}
+
+}
+
+/// Applies padding to an element, taking the current element-margin value into account.
+/// @param {mixed} $tb Top/bottom padding.
+/// @param {mixed} $lr Left/right padding.
+/// @param {list} $pad Optional extra padding (in the following order top, right, bottom, left)
+/// @param {bool} $important If true, adds !important.
+@mixin padding($tb, $lr, $pad: (0,0,0,0), $important: null) {
+
+	@if $important {
+		$important: '!important';
+	}
+
+	$x: 0.1em;
+
+	@if unit(_size(element-margin)) == 'rem' {
+		$x: 0.1rem;
+	}
+
+	padding: ($tb + nth($pad,1)) ($lr + nth($pad,2)) max($x, $tb - _size(element-margin) + nth($pad,3)) ($lr + nth($pad,4)) #{$important};
+
+}
+
+/// Encodes a SVG data URL so IE doesn't choke (via codepen.io/jakob-e/pen/YXXBrp).
+/// @param {string} $svg SVG data URL.
+/// @return {string} Encoded SVG data URL.
+@function svg-url($svg) {
+
+	$svg: str-replace($svg, '"', '\'');
+	$svg: str-replace($svg, '%', '%25');
+	$svg: str-replace($svg, '<', '%3C');
+	$svg: str-replace($svg, '>', '%3E');
+	$svg: str-replace($svg, '&', '%26');
+	$svg: str-replace($svg, '#', '%23');
+	$svg: str-replace($svg, '{', '%7B');
+	$svg: str-replace($svg, '}', '%7D');
+	$svg: str-replace($svg, ';', '%3B');
+
+	@return url("data:image/svg+xml;charset=utf8,#{$svg}");
+
+}

assets/sass/libs/_vars.scss

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+// Misc.
+	$misc: (
+		z-index-base:			10000,
+		max-wrapper-styles:		6
+	);
+
+// Duration.
+	$duration: (
+		menu:					0.35s,
+		transition:				0.2s
+	);
+
+// Size.
+	$size: (
+		border-radius:			5px,
+		element-height:			2.75em,
+		element-margin:			2em,
+		inner:					55em,
+		section-spacing:		(
+			large:				3em,
+			medium:				2em,
+			small:				1.75em
+		),
+		wrapper-edges:			(
+			large:				6.5em,
+			medium:				4.75em,
+			small:				2.5em
+		)
+	);
+
+// Font.
+	$font: (
+		family:					('Source Sans Pro', Helvetica, sans-serif),
+		family-fixed:			('Courier New', monospace),
+		family-heading:			(Raleway, Helvetica, sans-serif),
+		weight:					300,
+		weight-bold:			600,
+		weight-heading:			200,
+		weight-heading-bold:	700,
+		kern-heading:			0.1em
+	);
+
+// Palette.
+	$palette: (
+		bg:						#2e3141,
+		fg:						#ffffff,
+		fg-bold:				#ffffff,
+		fg-light:				rgba(255,255,255,0.35),
+		border:					rgba(255,255,255,0.125),
+		border-bg:				rgba(255,255,255,0.025),
+		border2:				rgba(255,255,255,0.25),
+		border2-bg:				rgba(255,255,255,0.075),
+		accent:					#4c5c96
+	);

assets/sass/libs/_vendor.scss

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+// vendor.scss v1.0 | @ajlkn | MIT licensed */
+
+// Vars.
+
+	/// Vendor prefixes.
+	/// @var {list}
+	$vendor-prefixes: (
+		'-moz-',
+		'-webkit-',
+		'-ms-',
+		''
+	);
+
+	/// Properties that should be vendorized.
+	/// Data via caniuse.com, github.com/postcss/autoprefixer, and developer.mozilla.org
+	/// @var {list}
+	$vendor-properties: (
+
+		// Animation.
+			'animation',
+			'animation-delay',
+			'animation-direction',
+			'animation-duration',
+			'animation-fill-mode',
+			'animation-iteration-count',
+			'animation-name',
+			'animation-play-state',
+			'animation-timing-function',
+
+		// Appearance.
+			'appearance',
+
+		// Backdrop filter.
+			'backdrop-filter',
+
+		// Background image options.
+			'background-clip',
+			'background-origin',
+			'background-size',
+
+		// Box sizing.
+			'box-sizing',
+
+		// Clip path.
+			'clip-path',
+
+		// Filter effects.
+			'filter',
+
+		// Flexbox.
+			'align-content',
+			'align-items',
+			'align-self',
+			'flex',
+			'flex-basis',
+			'flex-direction',
+			'flex-flow',
+			'flex-grow',
+			'flex-shrink',
+			'flex-wrap',
+			'justify-content',
+			'order',
+
+		// Font feature.
+			'font-feature-settings',
+			'font-language-override',
+			'font-variant-ligatures',
+
+		// Font kerning.
+			'font-kerning',
+
+		// Fragmented borders and backgrounds.
+			'box-decoration-break',
+
+		// Grid layout.
+			'grid-column',
+			'grid-column-align',
+			'grid-column-end',
+			'grid-column-start',
+			'grid-row',
+			'grid-row-align',
+			'grid-row-end',
+			'grid-row-start',
+			'grid-template-columns',
+			'grid-template-rows',
+
+		// Hyphens.
+			'hyphens',
+			'word-break',
+
+		// Masks.
+			'mask',
+			'mask-border',
+			'mask-border-outset',
+			'mask-border-repeat',
+			'mask-border-slice',
+			'mask-border-source',
+			'mask-border-width',
+			'mask-clip',
+			'mask-composite',
+			'mask-image',
+			'mask-origin',
+			'mask-position',
+			'mask-repeat',
+			'mask-size',
+
+		// Multicolumn.
+			'break-after',
+			'break-before',
+			'break-inside',
+			'column-count',
+			'column-fill',
+			'column-gap',
+			'column-rule',
+			'column-rule-color',
+			'column-rule-style',
+			'column-rule-width',
+			'column-span',
+			'column-width',
+			'columns',
+
+		// Object fit.
+			'object-fit',
+			'object-position',
+
+		// Regions.
+			'flow-from',
+			'flow-into',
+			'region-fragment',
+
+		// Scroll snap points.
+			'scroll-snap-coordinate',
+			'scroll-snap-destination',
+			'scroll-snap-points-x',
+			'scroll-snap-points-y',
+			'scroll-snap-type',
+
+		// Shapes.
+			'shape-image-threshold',
+			'shape-margin',
+			'shape-outside',
+
+		// Tab size.
+			'tab-size',
+
+		// Text align last.
+			'text-align-last',
+
+		// Text decoration.
+			'text-decoration-color',
+			'text-decoration-line',
+			'text-decoration-skip',
+			'text-decoration-style',
+
+		// Text emphasis.
+			'text-emphasis',
+			'text-emphasis-color',
+			'text-emphasis-position',
+			'text-emphasis-style',
+
+		// Text size adjust.
+			'text-size-adjust',
+
+		// Text spacing.
+			'text-spacing',
+
+		// Transform.
+			'transform',
+			'transform-origin',
+
+		// Transform 3D.
+			'backface-visibility',
+			'perspective',
+			'perspective-origin',
+			'transform-style',
+
+		// Transition.
+			'transition',
+			'transition-delay',
+			'transition-duration',
+			'transition-property',
+			'transition-timing-function',
+
+		// Unicode bidi.
+			'unicode-bidi',
+
+		// User select.
+			'user-select',
+
+		// Writing mode.
+			'writing-mode',
+
+	);
+
+	/// Values that should be vendorized.
+	/// Data via caniuse.com, github.com/postcss/autoprefixer, and developer.mozilla.org
+	/// @var {list}
+	$vendor-values: (
+
+		// Cross fade.
+			'cross-fade',
+
+		// Element function.
+			'element',
+
+		// Filter function.
+			'filter',
+
+		// Flexbox.
+			'flex',
+			'inline-flex',
+
+		// Grab cursors.
+			'grab',
+			'grabbing',
+
+		// Gradients.
+			'linear-gradient',
+			'repeating-linear-gradient',
+			'radial-gradient',
+			'repeating-radial-gradient',
+
+		// Grid layout.
+			'grid',
+			'inline-grid',
+
+		// Image set.
+			'image-set',
+
+		// Intrinsic width.
+			'max-content',
+			'min-content',
+			'fit-content',
+			'fill',
+			'fill-available',
+			'stretch',
+
+		// Sticky position.
+			'sticky',
+
+		// Transform.
+			'transform',
+
+		// Zoom cursors.
+			'zoom-in',
+			'zoom-out',
+
+	);
+
+// Functions.
+
+	/// Removes a specific item from a list.
+	/// @author Hugo Giraudel
+	/// @param {list} $list List.
+	/// @param {integer} $index Index.
+	/// @return {list} Updated list.
+	@function remove-nth($list, $index) {
+
+		$result: null;
+
+		@if type-of($index) != number {
+			@warn "$index: #{quote($index)} is not a number for `remove-nth`.";
+		}
+		@else if $index == 0 {
+			@warn "List index 0 must be a non-zero integer for `remove-nth`.";
+		}
+		@else if abs($index) > length($list) {
+			@warn "List index is #{$index} but list is only #{length($list)} item long for `remove-nth`.";
+		}
+		@else {
+
+			$result: ();
+			$index: if($index < 0, length($list) + $index + 1, $index);
+
+			@for $i from 1 through length($list) {
+
+				@if $i != $index {
+					$result: append($result, nth($list, $i));
+				}
+
+			}
+
+		}
+
+		@return $result;
+
+	}
+
+	/// Replaces a substring within another string.
+	/// @author Hugo Giraudel
+	/// @param {string} $string String.
+	/// @param {string} $search Substring.
+	/// @param {string} $replace Replacement.
+	/// @return {string} Updated string.
+	@function str-replace($string, $search, $replace: '') {
+
+		$index: str-index($string, $search);
+
+		@if $index {
+			@return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
+		}
+
+		@return $string;
+
+	}
+
+	/// Replaces a substring within each string in a list.
+	/// @param {list} $strings List of strings.
+	/// @param {string} $search Substring.
+	/// @param {string} $replace Replacement.
+	/// @return {list} Updated list of strings.
+	@function str-replace-all($strings, $search, $replace: '') {
+
+		@each $string in $strings {
+			$strings: set-nth($strings, index($strings, $string), str-replace($string, $search, $replace));
+		}
+
+		@return $strings;
+
+	}
+
+// Mixins.
+
+	/// Wraps @content in vendorized keyframe blocks.
+	/// @param {string} $name Name.
+	@mixin keyframes($name) {
+
+		@-moz-keyframes #{$name} { @content; }
+		@-webkit-keyframes #{$name} { @content; }
+		@-ms-keyframes #{$name} { @content; }
+		@keyframes #{$name} { @content; }
+
+	}
+
+	/// Vendorizes a declaration's property and/or value(s).
+	/// @param {string} $property Property.
+	/// @param {mixed} $value String/list of value(s).
+	@mixin vendor($property, $value) {
+
+		// Determine if property should expand.
+			$expandProperty: index($vendor-properties, $property);
+
+		// Determine if value should expand (and if so, add '-prefix-' placeholder).
+			$expandValue: false;
+
+			@each $x in $value {
+				@each $y in $vendor-values {
+					@if $y == str-slice($x, 1, str-length($y)) {
+
+						$value: set-nth($value, index($value, $x), '-prefix-' + $x);
+						$expandValue: true;
+
+					}
+				}
+			}
+
+		// Expand property?
+			@if $expandProperty {
+			    @each $vendor in $vendor-prefixes {
+			        #{$vendor}#{$property}: #{str-replace-all($value, '-prefix-', $vendor)};
+			    }
+			}
+
+		// Expand just the value?
+			@elseif $expandValue {
+			    @each $vendor in $vendor-prefixes {
+			        #{$property}: #{str-replace-all($value, '-prefix-', $vendor)};
+			    }
+			}
+
+		// Neither? Treat them as a normal declaration.
+			@else {
+		        #{$property}: #{$value};
+			}
+
+	}