$control-radius: $radius !default;
$control-radius-small: $radius-small !default;
$control-border-width: 1px !default;
$control-height: 2.5em !default;
$control-line-height: 1.5 !default;
$control-padding-vertical: calc(0.5em - #{$control-border-width}) !default;
$control-padding-horizontal: calc(0.75em - #{$control-border-width}) !default;