diff --git a/src/styles/_sicp.scss b/src/styles/_sicp.scss
index ef5e183f74..268f4e1b4f 100644
--- a/src/styles/_sicp.scss
+++ b/src/styles/_sicp.scss
@@ -130,7 +130,7 @@ $sicp-background-color: #ffffff;
         z-index: 20;
         top: 0;
         left: 0;
-        height: calc(100vh - 40px);
+        height: calc(100% - 40px);
         width: 100vw;
       }
     }