fix large event block

assets/sass/_theme/sections/events.sass

@@ -257,8 +257,8 @@
                 flex-direction: column
                 grid-gap: 0
                 .media
-                    margin-left: calc(-#{var(--grid-gutter)} /2)
-                    margin-right: calc(-#{var(--grid-gutter)} /2)
+                    margin-left: var(--grid-gutter-negative)
+                    margin-right: var(--grid-gutter-negative)
                     aspect-ratio: 1
                     img 
                         margin-bottom: $spacing0