added style to credit

app/assets/stylesheets/extranet/pages/_posts.sass

 .posts-show header figure
+    display: inline-block
     position: relative
     figcaption
         display: block
+        font-size: 1rem
         left: 0
         position: absolute
         right: 0
@@ -9,11 +11,16 @@
         z-index: 10
         &::before
             font-family: inter,sans-serif
-            font-size: .875rem
-            font-weight: 400
-            line-height: 150%
             content: '©'
+            padding: calc(1rem/2)
             position: absolute
             right: 0
             top: 0
+        p
+            display: none
+            font-weight: 400
+            padding: calc(1rem/2)
+            padding-right: 1.5rem
+    &:hover figcaption p
+        display: block
                         
\ No newline at end of file

app/views/extranet/posts/posts/show.html.erb

@@ -4,11 +4,11 @@
   <% if @post.featured_image.attached? %>
     <figure>
       <%= kamifusen_tag @post.featured_image, class: 'img-fluid', width: 300 %>
-      <figcaption tabindex="0">
-        <p>
-          <%= sanitize @post.featured_image_credit %>
-        </p>
-      </figcaption>
+      <% if !@post.featured_image_credit.blank? %>
+        <figcaption tabindex="0">
+            <%= sanitize @post.featured_image_credit %>
+        </figcaption>
+      <% end %>
     </figure>
   <% end %>
 <% end %>