fix playground

Author: millotp

playground/javascript/browser/src/index.css

@@ -4,7 +4,7 @@
   font-weight: 400;
 
   color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
+  color: rgb(54, 164, 113);
   background-color: #242424;
 
   font-synthesis: none;
@@ -18,6 +18,7 @@ a {
   color: #646cff;
   text-decoration: inherit;
 }
+
 a:hover {
   color: #535bf2;
 }
@@ -46,9 +47,11 @@ button {
   cursor: pointer;
   transition: border-color 0.25s;
 }
+
 button:hover {
   border-color: #646cff;
 }
+
 button:focus,
 button:focus-visible {
   outline: 4px auto -webkit-focus-ring-color;
@@ -59,9 +62,11 @@ button:focus-visible {
     color: #213547;
     background-color: #ffffff;
   }
+
   a:hover {
     color: #747bff;
   }
+
   button {
     background-color: #f9f9f9;
   }