Add Apply Styles Based On Dark-Mode Preferences as a css til

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
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-_885 TILs and counting..._
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@@ -95,6 +95,7 @@ _885 TILs and counting..._
 - [Add Fab Icons To Your Site With FontAwesome 5](css/add-fab-icons-to-your-site-with-fontawesome-5.md)
 - [Animate Smoothly Between Two Background Colors](css/animate-smoothly-between-two-background-colors.md)
 - [Apply Multiple Box Shadows To Single Element](css/apply-multiple-box-shadows-to-single-element.md)
+- [Apply Styles Based On Dark-Mode Preferences](css/apply-styles-based-on-dark-mode-preferences.md)
 - [Apply Styles To The Last Child Of A Specific Type](css/apply-styles-to-the-last-child-of-a-specific-type.md)
 - [Change The Orientation Of An Image](css/change-the-orientation-of-an-image.md)
 - [Circular Icons With A Massive Border Radius](css/circular-icons-with-a-massive-border-radius.md)

css/apply-styles-based-on-dark-mode-preferences.md

@@ -0,0 +1,23 @@
+# Apply Styles Based On Dark-Mode Preferences
+
+There is a CSS media query for whether a user prefers a Dark-Mode or Light-Mode
+color scheme. If you're site is able to provide styling for both modes, then
+you can hook into those preferences like so:
+
+```css
+@media (prefers-color-scheme: dark) {
+  /* dark-mode styles */
+  /* perhaps changing some custom properties */
+}
+
+@media (prefers-color-scheme: light) {
+  /* light-mode styles */
+  /* perhaps changing some custom properties */
+}
+```
+
+As of this writing,
+[`prefers-color-scheme`](https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-color-scheme)
+is still in a draft state, but it already has decent browser support.
+
+[source](https://24ways.org/2019/interactivity-and-animation-with-variable-fonts/)