Move from CSS to SCSS (#86)

* Rewrite existing style.css with sass

* Add "uses-rst" class for pages that use rendered RST

This replaces the previous method of just listing
every page in the sass

* Remove old debug print

* Mixins and error pages

* Newly built CSS

* Add SASS cache to .gitignore

* New error SASS

* Slight changes to error template

* Add UIKit SCSS to repo

This includes the LICENSE and our customizations, which
makes life way easier for contributors

* Reorganize sass folder; your watchers can avoid uikit now

* Sass folder should be called scss

* Change variable names

* [SCSS] Linting

* Fix scss_lint gem name [ci skip]

* [SCSS] Now you can compile with just Python!

* Temporary hack to make the wiki editor taller

* [SCSS] @jchristgit

* [SCSS.py] Require specification of include dir to simplify the SCSS imports

* [SCSS] All inline styles have been removed

* [SCSS] Update UIKit theme to import from our variables

* [SCSS] Remove extra newlines in errors/_common.scss

1 files changed, 53 insertions, 0 deletions

diff --git a/scss/uikit/components/sticky.scss b/scss/uikit/components/sticky.scss
new file mode 100644
index 00000000..e8e54f92
--- /dev/null
+++ b/scss/uikit/components/sticky.scss
@@ -0,0 +1,53 @@
+// Name:            Sticky
+// Description:     Component to make elements sticky in the viewport
+//
+// Component:       `uk-sticky`
+//
+// Modifier:        `uk-sticky-fixed`
+//
+// States:          `uk-active`
+//
+// ========================================================================
+
+
+// Variables
+// ========================================================================
+
+$sticky-z-index:                                 $global-z-index - 20 !default;
+
+$sticky-animation-duration:                      0.2s !default;
+$sticky-reverse-animation-duration:              0.2s !default;
+
+
+/* ========================================================================
+   Component: Sticky
+ ========================================================================== */
+
+/*
+ * 1. Resolve frame rate issues on devices with lower frame rates by forcing hardware acceleration
+ */
+
+.uk-sticky-fixed {
+    z-index: $sticky-z-index;
+    box-sizing: border-box;
+    margin: 0 !important;
+    /* 1 */
+    -webkit-backface-visibility: hidden;
+    backface-visibility: hidden;
+}
+
+/*
+ * Faster animations
+ */
+
+.uk-sticky[class*='uk-animation-'] { animation-duration: $sticky-animation-duration; }
+
+.uk-sticky.uk-animation-reverse { animation-duration: $sticky-reverse-animation-duration; }
+
+
+// Hooks
+// ========================================================================
+
+@if(mixin-exists(hook-sticky-misc)) {@include hook-sticky-misc();}
+
+// @mixin hook-sticky-misc(){}