Fix ckeditor checkbox size

customize.dist/src/less2/include/forms.less

@@ -9,7 +9,7 @@
     @alertify-input-bg: @colortheme_modal-input;
     @alertify-input-fg: @colortheme_modal-input-fg;
 
-    input:not(.form-control), textarea, div.cp-textarea {
+    input:not(.form-control):not([type="checkbox"]), textarea, div.cp-textarea {
         // background-color: @alertify-input-fg;
         color: @cryptpad_text_col;
         border: 1px solid @alertify-input-bg;