Fix formatting errors reported by stylelint.

sass/macro.scss

@@ -29,7 +29,7 @@ h1 {
     position: absolute;
     display: block;
     height: 13px;
-    background: #FFF;
+    background: #fff;
     width: 100%;
     left: 0;
     top: -14px;
@@ -37,7 +37,7 @@ h1 {
 
 .action--item.active.callout,
 .macro-settings.callout {
-    box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.5);
+    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.5);
 }
 
 .list-group-item .move-handle:hover {
@@ -65,7 +65,7 @@ h1 {
 
 .action--edit__form {
     background-color: whtie;
-    margin-left: -.5rem;
+    margin-left: -0.5rem;
     margin-right: -15px;
     margin-top: 15px;
     padding-top: 15px;