$thumb-height: dynamic(20px);
$thumb-height-big: dynamic(28px);
$thumb-width: dynamic(20px);
$thumb-width-big: dynamic(28px);
$thumb-background-color: dynamic($background-color);
$thumb-hovered-background-color: dynamic(null);
$thumb-pressed-background-color: dynamic(null);
$thumb-border-radius: dynamic($thumb-height / 2);
$thumb-border-radius-big: dynamic($thumb-height-big / 2);
$thumb-icon: dynamic(null);
$thumb-icon-color: dynamic(null);
$thumb-icon-size: dynamic(null);
$thumb-icon-size-big: dynamic(null);
$thumb-box-shadow: dynamic(0px 2px 4px rgba(0,0,0,.2));
$thumb-box-shadow-big: dynamic(0px 3px 6px rgba(0,0,0,.2));