have the freedom to distribute copies of free software (and charge for
them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new
free programs, and that you know you can do these things.

  Developers that use our General Public Licenses protect your rights
with two steps: (1) assert copyright on the software, and (2) offer

@include box-shadow($btn-box-shadow, 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5));\n    } @else {\n      // Avoid using mixin so we can pass custom focus shadow properly\n      box-shadow: 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);\n    }\n  }\n\n  // Disabled comes first so active can properly restyle\n  &.disabled,\n  &:disabled {\n    color: color-yiq($background);\n    background-color: $background;\n    border-color: $border;\n    // Remove...