css (smaller doc font) and aggregation doc expansion

Author: mbaudis

docs/aggregations.md

@@ -178,6 +178,24 @@ The stacked bar chart was generated in Plotly.js from the Beacon 2D aggregation
 }
 ```
 
+## Definition of Aggregation Concepts
+
+Similar to `.../filtering_terms/` (see [filters](filters.md)) beacons should indicate their
+supported aggregations in the `.../aggregation_terms/` endpoint which allows clients
+to dynamically discover the available aggregations and their semantics. Aggregation
+terms provide **single**, _i.e._ 1-dimensional concepts, usually referring to a
+single property in the data model. 2D aggregations - reporting the occurrence of
+intersecting values, e.g. combining concepts for "diseases" and "sex at birth",
+are simply derived from those.
+
+```yaml
+id: sampleOriginDetails
+label: Anatomical Origin
+description: >-
+  Counts for anatomical sites in matched biosamples
+property: biosample.sample_origin_detail.id
+```
+
 
 
 

docs/css/theme_overrides.css

@@ -1,5 +1,7 @@
 :root {
   --md-accent-fg-color: #076d63;
+  font-size: 1.2em;
+
 }
 
 .md-grid {
@@ -32,9 +34,9 @@ div.figcaption {
 
 h2 {
     color: var(--md-accent-fg-color);
-    border-top:  var(--md-accent-fg-color) thin solid;
+/*    border-top:  var(--md-accent-fg-color) thin solid;
     border-bottom:  var(--md-accent-fg-color) thin solid;
-}
+*/}
 
 div.tabbed-set {
     background-color:  #fafafa;