combine edit into add/edit component

src/scss/box.scss

@@ -47,7 +47,7 @@
                 border-radius: $border-radius;
             }
 
-            &:last-child {
+            &:last-child:not(.box-content-row-cf) {
                 &:before {
                     border: none;
                     height: 0;

src/scss/styles.scss

@@ -73,6 +73,7 @@ a {
 
 input, select, textarea, button {
     font-size: $font-size-base;
+    font-family: $font-family-sans-serif;
 }
 
 textarea {