Use flex in a poll in the polls index

Note we aren't using flex-with-gap because currently (until we decide to
use the `gap` property) this mixin sets a negative margin that would
move the border of this element to the left.

app/assets/stylesheets/layout.scss

@@ -403,18 +403,10 @@ button,
   vertical-align: top;
 }
 
-.align-middle {
-  vertical-align: middle;
-}
-
 .table {
   display: table;
 }
 
-.table-cell {
-  display: table-cell;
-}
-
 .uppercase {
   text-transform: uppercase;
 }

app/assets/stylesheets/polls/poll.scss

@@ -2,7 +2,25 @@
   &.with-image {
 
     @include breakpoint(medium) {
+      display: flex;
       padding: 0 calc($line-height / 2) 0 0;
+
+      > * {
+        flex-basis: 25%;
+      }
+
+      .poll-info {
+        flex-basis: 50%;
+      }
+
+      > a {
+        align-self: center;
+      }
+
+      > .poll-info,
+      > a {
+        margin-#{$global-left}: rem-calc(map-get($grid-column-gutter, medium));
+      }
     }
   }
 

app/components/polls/poll_component.html.erb

@@ -1,15 +1,13 @@
 <div class="poll with-image">
   <%= render Polls::AccessStatusComponent.new(poll) %>
 
-  <div class="row" data-equalizer data-equalize-on="medium">
+  <div class="image-container">
-    <div class="small-12 medium-3 column">
-      <div class="image-container" data-equalizer-watch>
     <% if poll.image.present? %>
       <%= image_tag poll.image.variant(:large), alt: poll.image.title.unicode_normalize %>
     <% end %>
   </div>
-    </div>
+
-    <div class="small-12 medium-6 column" data-equalizer-watch>
+  <div class="poll-info">
     <% if poll.questions.one? %>
       <h4><%= link_to_poll poll.questions.first.title, poll %></h4>
       <div class="dates"><%= dates %></div>
@@ -26,14 +24,10 @@
     <%= render Polls::GeozonesComponent.new(poll) %>
     <%= render SDG::TagListComponent.new(poll, limit: 5, linkable: false) %>
   </div>
-    <div class="small-12 medium-3 column table" data-equalizer-watch>
+
-      <div class="table-cell align-middle">
   <% if poll.expired? %>
     <%= link_to_poll t("polls.index.participate_button_expired"), poll, class: "button hollow expanded" %>
   <% else %>
     <%= link_to_poll t("polls.index.participate_button"), poll, class: "button hollow expanded" %>
   <% end %>
 </div>
-    </div>
-  </div>
-</div>