Updated CSS.

src/display/css_html_js.py

@@ -26,7 +26,7 @@ custom_css = """
 #f1-tier-select-row {
   justify-content: flex-end;
   margin-bottom: 6px;
-  background: transparent !important;
+  background: white !important;
   border: none !important;
 }
 
@@ -55,11 +55,9 @@ custom_css = """
   box-shadow: 0 1px 2px rgba(0,0,0,0.04);
 }
 
-.f1-tier-select-row { background: white; }
-
-.f1-tier-select-row div { border: none; }
+#f1-tier-select-row div { border: none; }
 
-.f1-tier-select { background: white; }
+#f1-tier-select { background: white; }
 
 #learn-more-btn, #learn-more-btn button {
   background: transparent !important;