html - How to work with CSS Child Selector in a List? -

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i tested following code, , don't know why same html structure not working in list. inside div container p works fine. p inside .level1 class gets bold. same structure inside ul doesn't work. why li element inside .level2 class bold?

<ul class="level1">   <li>level 1</li>   <li>level 1</li>   <li>level 1     <ul class="level2">       <li>level 2</li>       <li>level 2</li>       </ul>   </li>   <li>level 1</li> </ul>   <div class="level1">   <p>level 1</p>   <p>level 1</p>   <p>level 1     <div class="level2">       <p>level 2</p>       <p>level 2</p>     </div>   </p>   <p>level 1</p> </div>  .level1 > li {  font-weight: bold; }  .level1 > p {   font-weight: bold; } 

<ul class="level1">   <li>level 1</li>   <li>level 1</li>   <li>level 1               // started here because of      <ul class="level2">     // class2 ul elements considered li of class1       <li>level 2</li>       <li>level 2</li>       </ul>   </li>                      <li>level 1</li> </ul>

whereas here, second question,

i add @defau1t answer :
in short, impossible toplace <div> element inside <p> in dom because opening <div> tag automatically close <p> element.

<div class="level1">   <p>level 1</p>   <p>level 1</p>   <p>level 1                 //p tag can't have div tag inside it.       <div class="level2">     //hence didn't worked       <p>level 2</p>       <p>level 2</p>     </div>   </p>   <p>level 1</p> </div>

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