easy-going-rails/app/views/scores/_form.html.erb

<%= form_with(model: score, class: "contents") do |form| %>
  <% if score.errors.any? %>
    <div
      id="error_explanation"
      class="bg-red-50 text-red-500 px-3 py-2 font-medium rounded-lg mt-3"
    >
      <h2><%= pluralize(score.errors.count, "error") %>
        prohibited this score from being saved:</h2>
      <ul>
        <% score.errors.each do |error| %>
          <li><%= error.full_message %></li>
        <% end %>

      </ul>
    </div>

  <% end %>
  <div class="my-5">
    <%= form.label :name %>
    <%= form.text_field :name,
                    class:
                      "block shadow rounded-md border border-gray-200 outline-none px-3 py-2 mt-2 w-full" %>
  </div>
  <div class="my-5">
    <%= form.label :grade %>
    <%= form.number_field :grade,
                      class:
                        "block shadow rounded-md border border-gray-200 outline-none px-3 py-2 mt-2 w-full" %>
  </div>
  <div class="inline">
    <%= form.submit class:
                  "rounded-lg py-3 px-5 bg-blue-600 text-white inline-block font-medium cursor-pointer" %>
  </div>
<% end %>