refactor: define explicit text color

src/assets/custom.scss

@@ -10,8 +10,6 @@ body {
 }
 
 #app {
-  color: #2e3436;
-
   .fc {
     .fc-timegrid-now-indicator-line {
       border-width: 2px 0 0;

src/assets/styles/tailwind.css

@@ -6,6 +6,11 @@
 :root {
   --primary: theme('colors.gray.800');
   --info: theme('colors.aura.purple');
+  --text-color: #2e3436;
+}
+
+body {
+  color: var(--text-color);
 }
 
 header a,