diff --git a/guide/english/certifications/responsive-web-design/css-flexbox/use-display-flex-to-position-two-boxes/index.md b/guide/english/certifications/responsive-web-design/css-flexbox/use-display-flex-to-position-two-boxes/index.md
index 36f238e659..3bbd707141 100644
--- a/guide/english/certifications/responsive-web-design/css-flexbox/use-display-flex-to-position-two-boxes/index.md
+++ b/guide/english/certifications/responsive-web-design/css-flexbox/use-display-flex-to-position-two-boxes/index.md
@@ -5,7 +5,7 @@ title: "Use display: flex to Position Two Boxes"
 
 <a href='https://github.com/freecodecamp/guides/tree/master/src/pages/css/layout/flexbox/index.md' target='_blank' rel='nofollow'>Flexbox</a> is a way to structure content in CSS3 which allows you to create responsie websites.
 
-This challenge is to set the first out of thre steps when using Flexbox. You need to make the parent container a flex one by adding <i>display:flex;</i> to its CSS section.
+This challenge is to set the first out of three steps when using Flexbox. You need to make the parent container a flex one by adding <i>display:flex;</i> to its CSS section. The CSS style can target a specific ID or HTML tag, or be aplied to multiple containers using a class. The parent container can be any container-type element, such as a div, section, header, footer, etc.
 
 Example: