diff --git a/contents/en/html-questions.md b/contents/en/html-questions.md index a07bce0dc..2e153f44c 100644 --- a/contents/en/html-questions.md +++ b/contents/en/html-questions.md @@ -144,14 +144,16 @@ Note: The `async` and `defer` attrib­utes are ignored for scripts that have no **Placing ``s in the ``** -Putting ``s in the `` is part of proper specification in building an optimized website. When a page first loads, HTML and CSS are being parsed simultaneously; HTML creates the DOM (Document Object Model) and CSS creates the CSSOM (CSS Object Model). Both are needed to create the visuals in a website, allowing for a quick "first meaningful paint" timing. This progressive rendering is a category optimization sites are measured in their performance scores. Putting stylesheets near the bottom of the document is what prohibits progressive rendering in many browsers. Some browsers block rendering to avoid having to repaint elements of the page if their styles change. The user is then stuck viewing a blank white page. Other times there can be flashes of unstyled content (FOUC), which can shows a webpage with no styling applied. +Putting ``s in the `` is part of proper specification in building an optimized website. When a page first loads, HTML and CSS are being parsed simultaneously; HTML creates the DOM (Document Object Model) and CSS creates the CSSOM (CSS Object Model). Both are needed to create the visuals in a website, allowing for a quick "first meaningful paint" timing. This progressive rendering is a category optimization sites are measured in their performance scores. Putting stylesheets near the bottom of the document is what prohibits progressive rendering in many browsers. Some browsers block rendering to avoid having to repaint elements of the page if their styles change. The user is then stuck viewing a blank white page. Other times there can be flashes of unstyled content (FOUC), which show a webpage with no styling applied. **Placing `