strasbourg-2018: give style to block add & remove buttons (#63634)

static/strasbourg-2018/_custom.scss

@@ -46,6 +46,7 @@ div#content div#rub_service div.form-validation {
 }
 
 /* style authentic forms */
+%button,
 a.pk-button,
 div.block form button, div.a2-block form button,
 div#content div#columns div.a2-block form input[type=submit],
@@ -1545,3 +1546,37 @@ div.RadiobuttonsWidget.template-evaluation {
 .form-content--titlebar {
 	display: none;
 }
+
+#rub_service .BlockWidget .list-add {
+	clear: both;
+	.content {
+		display: block;
+		button {
+			@extend %button;
+		}
+	}
+}
+
+.wcs-block-with-remove-button {
+	.BlockSubWidget {
+		position: relative;
+		@include clearfix();
+	}
+	.remove-button {
+		@extend %button;
+		position: absolute;
+		right: 3px;
+		top: -1.5em;
+		margin-right: 0;
+		&[disabled] {
+			display: none;
+		}
+		span {
+			display: none;
+		}
+		&::after {
+			font-family: FontAwesome;
+			content: "\f1f8";  // trash
+		}
+	}
+}