fixed alternate posts margins

assets/sass/_theme/blocks/posts.sass

@@ -171,12 +171,11 @@
                 width: col(4, 10)
                 &.right
                     margin-left: auto
-                &:not(:first-child)
+                &.left
                     &.portrait
                         margin-top: -30%
-                    &.square
-                        margin-top: -15%
+                    &.square,
                     &.landscape
-                        margin-top: -10%
+                        margin-top: -15%
         .post .media img
             aspect-ratio: unset
\ No newline at end of file