Update index.md

Author: chrisdavidmills

files/en-us/learn_web_development/extensions/forms/form_validation/index.md

@@ -846,7 +846,7 @@ form.addEventListener("submit", handleSubmit);
 
 The result looks like this:
 
-{{EmbedLiveSample("An_example_that_doesnt_use_the_constraint_validation_API", "100%", 130)}}
+{{EmbedLiveSample("An_example_that_doesnt_use_the_constraint_validation_API", "100%", 150)}}
 
 As you can see, it's not that hard to build a validation system on your own. The difficult part is to make it generic enough to use both cross-platform and on any form you might create. There are many libraries available to perform form validation, such as [Validate.js](https://rickharrison.github.io/validate.js/).