sismica/liferay-plugins-sdk-6.2/themes/portos-private-fe-theme/docroot/css/aui/_buttons-alloy.scss

//
// Buttons
// --------------------------------------------------


// Base styles
// --------------------------------------------------

// Core
.btn-hidden {
  display: none;
}

// Make a button look and behave like a close item
.btn.close {
  @extend .close;
}

.btn.close:focus,
.btn.close:hover,
.btn.close.active {
	@extend .close:hover;
	@include box-shadow(none);
}

.btn.close:active {
  @extend .close:active;
  @include box-shadow(none);
}