Fix

app.py

@@ -10,7 +10,6 @@ css = '''
         overflow: hidden !important;
         margin: 5px 0 !important;
         padding: 0 10px !important;
-        height: 100% !important;
     }
 
     .file-preview div div:nth-child(2) {
@@ -25,6 +24,7 @@ css = '''
         user-select: none !important;
         touch-action: none !important;
         pointer-events: none !important;
+        height: 100% !important;
     }
 '''