Fix issue and add transition into toggle left menu

src/assets/fabricator/styles/partials/_color-chips.scss

@@ -5,7 +5,7 @@
 
 .f-color-chip {
 	flex-grow: 1;
-	flex-shrink: 0;
+	flex-shrink: 1;
 	flex-basis: 100%;
 	border-top-width: 8em;
 	border-top-style: solid;

src/assets/fabricator/styles/partials/_layout.scss

@@ -29,6 +29,7 @@ body {
 .f-container {
 	@include clearfix;
 	@include border-box;
+	@include transition;
 	position: relative;
 	padding: 0 1em;
 	z-index: 0;

src/assets/fabricator/styles/partials/_menu.scss

@@ -1,6 +1,7 @@
 // menu
 .f-menu {
 	@include border-box;
+	@include transition;
 	position: fixed;
 	top: 0;
 	left: 0;

src/assets/fabricator/styles/partials/_variables.scss

@@ -30,7 +30,7 @@ $menu-width: map-get($settings, menu-width);
 
 // functions
 @function color($color) {
-    @return map-get($colors, $color);
+	@return map-get($colors, $color);
 }
 
 
@@ -50,3 +50,14 @@ $menu-width: map-get($settings, menu-width);
 @mixin border-box {
 	box-sizing: border-box;
 }
+
+@mixin transition($transition...) {
+	@if length($transition) < 1 {
+		$transition: all 0.3s ease;
+	}
+
+	-moz-transition: $transition;
+	-o-transition: $transition;
+	-webkit-transition: $transition;
+	transition: $transition;
+}