Changed px to em and added margin for add-checklist-item link

client/components/cards/checklists.styl

@@ -114,7 +114,7 @@ textarea.js-add-checklist-item, textarea.js-edit-checklist-item
     background-color: darken(white, 8%)
 
   .check-box
-    margin-top: 3px;
+    margin: 0.1em 0 0 0;
     &.is-checked
       border-bottom: 2px solid #3cb500
       border-right: 2px solid #3cb500
@@ -135,5 +135,5 @@ textarea.js-add-checklist-item, textarea.js-edit-checklist-item
   padding: 12px 0 0 0
 
 .add-checklist-item
-  margin: 0 0 0.5em 1.33em
+  margin: 0.2em 0 0.5em 1.33em
   display: inline-block