diff --git a/packages/runner/src/errors/errors.scss b/packages/runner/src/errors/errors.scss
index a283dcf54a86..cc5616961af2 100644
--- a/packages/runner/src/errors/errors.scss
+++ b/packages/runner/src/errors/errors.scss
@@ -58,17 +58,14 @@
 
   .script-error {
     background-color: #f8f8f8;
-    bottom: 0;
     border: none;
     border-radius: 0;
     color: #ec6573;
-    left: 0;
     overflow: auto;
     margin: 0;
     padding: 2em;
-    position: absolute;
-    right: 0;
-    top: 0;
+    width: 100%;
+    height: 100%;
 
     &:empty {
       display: none;
diff --git a/packages/runner/src/iframe/iframe.scss b/packages/runner/src/iframe/iframe.scss
index 9206d0a2d739..d1885a3e2c95 100644
--- a/packages/runner/src/iframe/iframe.scss
+++ b/packages/runner/src/iframe/iframe.scss
@@ -1,6 +1,11 @@
 .runner {
   .iframes-container {
     position: fixed;
+
+    &.has-error {
+      width: 100%;
+      height: 100%;
+    }
   }
 
   .size-container {