vaadin-framework/themes/src/main/themes/VAADIN/themes/liferay/accordion/accordion.scss

@mixin liferay-accordion {

.v-accordion {
	border: 1px solid #999;
	-webkit-border-radius: 4px;
	-moz-border-radius: 4px;
	border-radius: 4px;
}

.v-accordion-item-caption {
	color: #222;
	text-shadow: 1px 1px #FFFFFF;
	font-weight: bold;
	background: #c0c2c5 url(/html/themes/classic/images/application/panel_header_bg.png) repeat-x scroll 0 0;
	border-top: 1px solid #999;
	border-bottom: none;
	padding: 4px 5px 5px 5px;
}

.v-accordion-item-caption .v-caption {
	font-size: 12px;
}

.v-accordion-item-first .v-accordion-item-caption {
	border-top: none;
	-webkit-border-radius: 4px 4px 0 0;
	-moz-border-radius: 4px 4px 0 0;
	border-radius: 4px 4px 0 0;
}

.v-accordion-item-open .v-accordion-item-caption {
	border-bottom: 1px solid #999;
}

}