$duration-instantly: 0s !default;
$duration-immediately: 0.05s !default;
$duration-quickly: 0.25s !default;
$duration-normal: 0.3s !default;
$duration-slowly: 0.4s !default;
$curve-instantEaseOut: cubic-bezier(0.1, 0.8, 0.4, 1) !default;
$curve-subtleEaseOut: cubic-bezier(.44,.9,.6,.94) !default;
$curve-subtleEaseInOut: cubic-bezier(.62, .28, .23, .99) !default;