$fieldset-header-line-height: 16px !default;
$fieldset-collapse-tool-size: 15px !default;

$fieldset-collapse-tool-background-image: 'fieldset/collapse-tool' !default;
$fieldset-collapse-tool-background-position: 0 0 !default;
$fieldset-collapse-tool-background-position-over: 0 (-$fieldset-collapse-tool-size) !default;
$fieldset-collapse-tool-background-position-collapsed: (-$fieldset-collapse-tool-size) 0 !default;
$fieldset-collapse-tool-background-position-collapsed-over: (-$fieldset-collapse-tool-size) (-$fieldset-collapse-tool-size) !default;