diff --git a/scss/vendor/jspreadsheet-theme.scss b/scss/vendor/jspreadsheet-theme.scss
index df51dbc..80a9f8f 100644
--- a/scss/vendor/jspreadsheet-theme.scss
+++ b/scss/vendor/jspreadsheet-theme.scss
@@ -24,6 +24,15 @@
 .jexcel {
   border-bottom: 1px solid var(--jexcel_border_color);
   border-right: 1px solid var(--jexcel_border_color);
+  background-color: transparent;
+}
+
+table.jexcel {
+  border-bottom: 1px solid var(--jexcel_border_color);
+}
+
+.jcontextmenu.jexcel_contextmenu hr {
+  border-color: var(--jexcel_border_color);
 }
 
 .jexcel_corner {
@@ -50,6 +59,14 @@
   color: var(--jexcel_header_color_highlighted);
 }
 
+table.jexcel > tbody > tr > td:first-child {
+  background-color: var(--jexcel_header_background);
+}
+
+table.jexcel > tbody > tr.selected > td:first-child {
+  background-color: var(--jexcel_header_background_highlighted);
+}
+
 .jexcel > tbody > tr > td.jexcel_cursor a {
   color: var(--active-color);
 }