Center next-events boxes again (#683)

Author: albig

sass/_event.scss

@@ -44,6 +44,8 @@ a.event-card {
     background-image: url("assets/img/sunflower1.jpg");
     background-size: cover;
     background-position: top;
+
+    flex-direction: column;
 }
 
 #leaflet {

src/next-events/render.php

@@ -17,7 +17,7 @@
 }
 
 $sunflower_return = sprintf(
-	' <div class="wp-block-group alignfull sunflower-has-background-dim has-text-color has-white-color has-background is-vertical is-content-justification-center is-content-justification-center is-layout-flex wp-container-core-group-is-layout-4 wp-block-group-is-layout-flex  next-events %s">
+	' <div class="wp-block-group alignfull sunflower-has-background-dim has-text-color has-white-color has-background is-vertical is-content-justification-center is-content-justification-center is-layout-flex wp-block-group-is-layout-flex next-events %s">
                     <div class="wp-block-group__inner-container">
                         <h2 class="wp-block-heading has-text-align-center h1">%s</h2>
                         <div class="wp-block-button text-center mb-5"><a class="wp-block-button__link no-border-radius" href="%s" rel="">%s</a></div>