feat: style facets

closes #2

sade-projects/textgrid/templates/tmpl1/css/custom.css

@@ -2186,13 +2186,23 @@ pre {
 /*    color: #B6473D;*/
 /*}*/
 
-.facet-area > li {
+.facet-area li {
     list-style: none;
 }
+.facetSelected {
+  background-color: lightgrey;
+}
 .glyphicon.glyphicon-minus-sign {
-    margin-right: 5px;
+    margin-right: 8px;
     font-size: small;
 }
+.facet-area ul {
+  padding-left: 20px;
+  padding-bottom: 20px;
+}
+.facet-area ul li {
+  padding-bottom: 3px;
+}
 
 /* TEI style */
 .column {
@@ -2286,4 +2296,4 @@ li.editorialNote li {
 ul.paginationAlphabet li {
     display: inline-block;
     padding: 10px;
-}
\ No newline at end of file
+}