Fix new file attachment width

Author: mallowlabs

app/assets/stylesheets/main.css.scss

@@ -108,6 +108,10 @@ ul.attachments {
   padding-left: 0;
 }
 
+.fileinput {
+  display: block;
+}
+
 .cm-editor {
   height: auto;
   border: 1px solid #ddd;