diff --git a/src/css/aladin.css b/src/css/aladin.css
index ce01750e..70dc2767 100644
--- a/src/css/aladin.css
+++ b/src/css/aladin.css
@@ -229,7 +229,7 @@
     height: fit-content;
 }
 
-canvas {
+.aladin-container canvas {
     image-rendering: optimizeSpeed;             /* Older versions of FF          */
     image-rendering: -moz-crisp-edges;          /* FF 6.0+                       */
     image-rendering: -webkit-optimize-contrast; /* Safari                        */