Merge pull request #557 from magento-devdocs/db_tips_fix

Small doc fixes

Author: okolesnyk

docs/guides/selectors.md

@@ -208,14 +208,16 @@ Here is an example of what NOT to do, but this demonstrates how the selector wor
 
 In the BAD example above, we are specifying a very precise path to an input element in the DOM, starting from the very top of the document.
 
-Similarly, the relative XPath selector is a double forward slash `//`. It is used to start searching for an element anywhere in the DOM.
+Similarly, the relative XPath selector is a double forward slash `//`. It is used to start searching for an element anywhere in the DOM starting from the specified element. If no element is defined, the entire DOM is searched.
 
 Example:
 
 ```xpath
 //div[@class=’form-group’]//input[@id='user-message']
 ```
 
+In the `GOOD` example above, all `<div class='form-group'/>` elements in the DOM are matched first. Then all `<input id='user-message'/>` with `<div class='form-group'/>` as one of its parents are matched. The parent does not have to immediately precede it since it uses another double forward slash `//`.
+
 #### Parent Selectors
 
 The parent selector (`..`) allows you to jump to the parent element.

docs/mftf-tests.md

@@ -5,7 +5,6 @@
 dl dt{
   font-weight:400;
 }
-
 </style>
 
 # MFTF functional test reference