Fix strange blinking rows and font-family in all tables

app.py

@@ -246,18 +246,13 @@ custom_css = """
 
 footer {visibility: hidden}
 
-.leaderboard-table tr:first-child th {
-  background-color: var(--table-even-background-fill) !important;
+tr {
+  background-color: var(--table-even-background-fill);
   font-family: "IBM Plex Mono";
 }
 
-.leaderboard-table tr td {
-  background-color: var(--table-even-background-fill) !important;
-  font-family: "IBM Plex Mono";
-}
-
-.leaderboard-table tr.row_odd td {
-  background-color: var(--table-odd-background-fill) !important;
+tr.row_odd {
+  background-color: var(--table-odd-background-fill);
 }
 
 .leaderboard-table th:first-child, .leaderboard-table td:first-child {