.wpb-content-layouts .wpb-layout-element-button .icon-wpb-vc_extension_cq {
    background-image: url(../img/icon.png)!important;
}
span.vc_element-icon.icon-wpb-vc_extension_cq{
    background-image: url(../img/icon.png)!important;
}

.wpb_cq_vc_extension.wpb_content_element > .wpb_element_wrapper {
	background-image: url(../img/icon.png)!important;
}