diff --git a/app/static/css/simplemde-override.css b/app/static/css/simplemde-override.css
index e73e2e8..ae75f2b 100644
--- a/app/static/css/simplemde-override.css
+++ b/app/static/css/simplemde-override.css
@@ -36,6 +36,19 @@ div.editor-preview {
     background: var(--background-preview);
 }
 
+div.editor-preview table th,
+div.editor-preview-side table th,
+div.editor-preview table td,
+div.editor-preview-side table td {
+    border: inherit;
+    padding: inherit;
+}
+
+div.editor-preview table.codehilitetable pre,
+div.editor-preview-side table.codehilitetable pre {
+    background: transparent;
+}
+
 div.CodeMirror .CodeMirror-selected,
 div.CodeMirror .CodeMirror-selectedtext {
     background: var(--background-light);