add class

app/javascript/submission_form/area.vue

@@ -1,6 +1,6 @@
 <template>
   <div
-    class="flex absolute lg:text-base -outline-offset-1"
+    class="field-area flex absolute lg:text-base -outline-offset-1"
     dir="auto"
     :style="computedStyle"
     :class="{ 'text-[1.5vw] lg:text-base': !textOverflowChars, 'text-[1.0vw] lg:text-xs': textOverflowChars, 'cursor-default': !submittable, 'border border-red-100 bg-red-100 cursor-pointer': submittable, 'border border-red-100': !isActive && submittable, 'bg-opacity-80': !isActive && !isValueSet && submittable, 'outline-red-500 outline-dashed outline-2 z-10': isActive && submittable, 'bg-opacity-40': (isActive || isValueSet) && submittable }"