Required mixins.

src/styles/global/_mixins.scss

@@ -0,0 +1,23 @@
+
+@mixin breakpt($pt) {
+  @media (max-width: $pt) {
+    @content;
+  }
+}
+
+@mixin user-select($select) {
+  -khtml-user-select: $select;
+  -moz-user-select: $select;
+  -ms-user-select: $select;
+  -webkit-user-select: $select;
+  user-select: $select;
+}
+
+@mixin touch-callout($callout) {
+  -webkit-touch-callout: $callout;
+}
+
+@mixin box-shadow($shadow) {
+  -webkit-box-shadow: $shadow;
+  box-shadow: $shadow;
+}