Set #content margin to 0 for direct editing

`#content` has a default margin in Nextcloud 25, which breaks the layout
for direct editing. Manually set it to 0 in order to fix direct editing.

Fixes: #2976

Signed-off-by: Jonas <jonas@freesources.org>

Author: mejo-

src/views/DirectEditing.vue

@@ -127,6 +127,13 @@ export default {
 }
 </script>
 
+<style lang="scss">
+	#content[class=app-public] {
+		margin: 0;
+		margin-top: 0;
+	}
+</style>
+
 <style scoped lang="scss">
 	body {
 		position: fixed;