Polished styling of REST Mock

Frontend/src/style.css

@@ -2,8 +2,12 @@
 @tailwind components;
 @tailwind utilities;
 
+.inactive-button {
+    @apply py-2.5 px-4 h-fit text-slate-400 border border-slate-400 rounded-full
+}
+
 .tool-button {
-    @apply py-1 px-4 rounded-full bg-gradient-to-r from-blue-400 to-sky-300  dark:text-white dark:from-sky-600 dark:to-sky-800 hover:bg-blue-400
+    @apply hover:brightness-110 py-2.5 px-4 h-fit rounded-full bg-gradient-to-r from-blue-400 to-sky-300  dark:text-white dark:from-sky-600 dark:to-sky-800 hover:bg-blue-400
 }
 
 .text-field {