爲什麼我不應該在h3中嵌套h4元素？

Question

爲什麼我不應該在h3內部嵌套h4元素？
爲什麼遵循w3c-recommendation很重要？

Answer 1

爲什麼我不應該在h3中嵌套h4元素？

想想打印文檔：

h2, h3, h4 { 
 
margin-bottom: 0; 
 
} 
 

 
h2 + p, h3 + p, h4 + p { 
 
margin-top: 0; 
 
}

<h2>4. I am the main heading of a section</h2> 
 
<p>I am an introduction to the section and an overview of the main points that will be covered.</p> 
 

 
<h3>5.3 I am a sub-section heading</h3> 
 
<p>I am a sub-section. I cover points in detail.</p> 
 

 
<h4>6.1.2 I am a heading of a sub-section within the sub-section</h4> 
 
<p>I am a sub-section within a sub-section. I provide quite deep detail on a particular aspect of the topic under discussion.</p>

現在想想嵌套子子標題一樣6.1.2內部的子標題一樣5.3 。

考慮將前者嵌入後者中。

你能想象嗎？