fix dark mode color contrast

Author: pancakereport

_sass/custom/custom.scss

@@ -13,16 +13,16 @@
 
 /* Warning Callout Styling */
 .warning {
-  padding: 1em;
-  margin: 1em 0;
-  border-left: 5px solid #ff4b4b;
-  background-color: #fff2f2;     
+  padding: 1.25em;
+  margin: 1.5em 0;
+  border-left: 5px solid #ff4b4b; 
+  background-color: #fff2f2;
+  color: $body-text-color;
   border-radius: 4px;
-  color: #333;
 }
 
 .warning a {
-  font-weight: bold;
-  text-decoration: underline;
   color: #d00000;
-}
+  text-decoration: underline;
+}
+