style: just use class HTML attribute for static CSS classes

src/Pages/EmissionManager.vue

@@ -131,8 +131,8 @@
           <div
             v-for="timeslot in timeslotsForDay"
             :key="timeslot.id"
+            class="timeslot tw-w-full tw-py-2 tw-px-3 tw-rounded hover:tw-bg-gray-200 hover:tw-text-gray-900 tw-cursor-pointer tw-border tw-border-solid tw-border-gray-200 tw-mb-2"
             :class="{
-              'timeslot tw-w-full tw-py-2 tw-px-3 tw-rounded hover:tw-bg-gray-200 hover:tw-text-gray-900 tw-cursor-pointer tw-border tw-border-solid tw-border-gray-200 tw-mb-2': true,
               'tw-bg-gray-900 tw-text-white':
                 new Date() >= new Date(timeslot.start) && new Date() <= new Date(timeslot.end),
               'tw-bg-gray-200 tw-text-gray-600 tw-opacity-75': new Date() >= new Date(timeslot.end),