Added 'prefers-reduced-motion' css support.

src/styles/_input.scss

@@ -126,6 +126,10 @@
     border-width: 2px;
     border-color: $color-gray;
     transition: background-color 0.1s ease-out;
+
+    @media screen and (prefers-reduced-motion: reduce) {
+      transition-duration: 0ms;
+    }
   }
 
   &-icon {

src/styles/_layer.scss

@@ -43,6 +43,10 @@
     -webkit-transition: opacity 600ms, visibility 600ms;
     transition: opacity 600ms, visibility 600ms;
 
+    @media screen and (prefers-reduced-motion: reduce) {
+      transition-duration: 0;
+    }
+
     @include flex-row;
   }