Added icon.

Added nowrap.
Added user-select none to disabled.

src/styl/core/mixins.styl

@@ -118,7 +118,12 @@ relative() {
     border-style: solid;
 }
 
-&.disabled {
+.disabled {
     filter: contrast(40%) brightness(110%);
     cursor: default;
+    user-select: none;
+}
+
+.nowrap {
+    white-space: nowrap;
 }

src/styl/icon/icon-settings.styl

@@ -0,0 +1 @@
+@require "../settings.styl";

src/styl/icon/icon.styl

@@ -0,0 +1,8 @@
+@require 'icon-settings.styl';
+
+.icon
+    & > svg
+        display: inline-block;
+        width: 1em;
+        height: 1em;
+        vertical-align: -0.125em;

src/styl/main.styl

@@ -30,6 +30,7 @@
 @require "form/form.styl";
 @require "grid/container.styl";
 @require "grid/grid.styl";
+@require "icon/icon.styl";
 @require "input/input.styl";
 @require "input/button.styl";
 @require "input/button-group.styl";