Full height output in mirrored output area

packages/outputarea/style/index.css

@@ -170,10 +170,10 @@ body.p-mod-override-cursor .jp-OutputArea-output.jp-mod-isolated:before {
 |----------------------------------------------------------------------------*/
 
 .jp-LinkedOutputView .jp-OutputArea {
-  height: calc(100%);
+  height: 100%;
   display: block;
 }
 
-.jp-LinkedOutputView .jp-OutputArea-child:only-child {
-  height: calc(100%);
+.jp-LinkedOutputView .jp-OutputArea-output:only-child {
+   height: 100%;
 }