theming done by creating a custom skin

_config.yml

@@ -22,7 +22,7 @@ description: >- # this means to ignore newlines until "baseurl:"
   and clinical practice.
 # twitter_username: username
 # github_username: doc
-minimal_mistakes_skin: contrast
+minimal_mistakes_skin: safehr
 search: true
 
 # Build settings

_sass/minimal-mistakes.scss

@@ -0,0 +1,37 @@
+/* Copyright comment */
+@import "minimal-mistakes/copyright";
+
+/* Variables */
+@import "minimal-mistakes/variables";
+
+/* Mixins and functions */
+@import "minimal-mistakes/vendor/breakpoint/breakpoint";
+@include breakpoint-set("to ems", true);
+@import "minimal-mistakes/vendor/magnific-popup/magnific-popup"; // Magnific Popup
+@import "minimal-mistakes/vendor/susy/susy";
+@import "minimal-mistakes/mixins";
+
+/* Core CSS */
+@import "minimal-mistakes/reset";
+@import "minimal-mistakes/base";
+@import "minimal-mistakes/forms";
+@import "minimal-mistakes/tables";
+@import "minimal-mistakes/animations";
+
+/* Components */
+@import "minimal-mistakes/buttons";
+@import "minimal-mistakes/notices";
+@import "minimal-mistakes/masthead";
+@import "minimal-mistakes/navigation";
+@import "minimal-mistakes/footer";
+@import "minimal-mistakes/search";
+@import "minimal-mistakes/syntax";
+
+/* Utility classes */
+@import "minimal-mistakes/utilities";
+
+/* Layout specific */
+@import "minimal-mistakes/page";
+@import "minimal-mistakes/archive";
+@import "minimal-mistakes/sidebar";
+@import "minimal-mistakes/print";

_sass/minimal-mistakes/_animations.scss

@@ -0,0 +1,21 @@
+/* ==========================================================================
+   ANIMATIONS
+   ========================================================================== */
+
+@-webkit-keyframes intro {
+  0% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
+}
+
+@keyframes intro {
+  0% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
+}