diff --git a/archivist/static/css/main.css b/archivist/static/css/main.css
index 074b546..74ea640 100644
--- a/archivist/static/css/main.css
+++ b/archivist/static/css/main.css
@@ -355,7 +355,7 @@ body{
 
 @media (max-aspect-ratio: 1/1) {
     .gallery-item {
-        height: 30vh;
+        height: 30rem;
     }
 }
 
@@ -363,7 +363,7 @@ body{
 
 @media (max-height: 480px) {
     .gallery-item {
-        height: 80vh;
+        height: 80rem;
     }
 }