[fix] simple theme: display image detail view fullscreen on landscape phones

client/simple/src/less/detail.less

@@ -244,7 +244,7 @@ article.result-images .detail {
 
     a.result-images-source img {
       width: 100%;
-      max-height: calc(100vh - 20rem);
+      max-height: calc(100vh - 2rem);
       margin: 0;
     }