Why nth-of-type/nth-child doesn't work for nested elements?
P粉203792468
P粉203792468 2023-10-23 10:39:24
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I'm trying to change the style of odd divs inside a div. For some reason, when nth-of-type(odd) is inside another div, it affects all my divs. Here is my code for regular divs and odd divs:


.video-entry-summary {
  width: 214px;
  height: 210px;
  margin-left: 10px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
}

.video-entry-summary:nth-of-type(odd) {
  width: 214px;
  height: 210px;
  margin-left: 0px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
  background: #ccc;
}
<div id="post-501" class="post-501 post type-post status-publish format-standard hentry category-moto-dz-films tag-news-sub-2">
  <div class="video-entry-summary">
    video 1
  </div>
</div>

<div id="post-240" class="post-240 post type-post status-publish format-standard hentry category-videos">
  <div class="video-entry-summary">
    video 2
  </div>
</div>

<div id="post-232" class="post-232 post type-post status-publish format-standard hentry category-videos">
  <div class="video-entry-summary">
    video 3
  </div>
</div>

<div id="post-223" class="post-223 post type-post status-publish format-standard hentry category-videos">
  <div class="video-entry-summary">
    video 4
  </div>
</div>


For some reason, the nth-of-type doesn't work when wrapped inside my div, but does work when they are not wrapped inside any div.

Working version when not wrapped in a div:


.video-entry-summary {
  width: 214px;
  height: 210px;
  margin-left: 10px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
}

.video-entry-summary:nth-of-type(odd) {
  width: 214px;
  height: 210px;
  margin-left: 0px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
  background: #ccc;
}
<div class="video-entry-summary">
  video 1
</div>

<div class="video-entry-summary">
  video 2
</div>

<div class="video-entry-summary">
  video 3
</div>

<div class="video-entry-summary">
  video 4
</div>


How do I make the initial code work like the one above?

P粉203792468
P粉203792468

reply all(1)
P粉078945182

:nth-of-type() is similar to :nth-child() in that they must both come from the same parent. If you need these wrappers div, use :nth-of-type() on these wrappers:

div.post:nth-of-type(odd) .video-entry-summary {
    width:214px; 
    height:210px; 
    margin-left:0px;
    float:left;
    position:relative; 
    overflow:hidden; 
    border:1px solid black; 
    background:#ccc; 
}

If all siblings are .post, use :nth-child() to avoid conflicts with :nth- The true meaning of of-type():

.post:nth-child(odd) .video-entry-summary {
    width:214px; 
    height:210px; 
    margin-left:0px;
    float:left;
    position:relative; 
    overflow:hidden; 
    border:1px solid black; 
    background:#ccc; 
}

.video-entry-summary {
  width: 214px;
  height: 210px;
  margin-left: 10px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
}

.post:nth-child(odd) .video-entry-summary {
  width: 214px;
  height: 210px;
  margin-left: 0px;
  float: left;
  position: relative;
  overflow: hidden;
  border: 1px solid black;
  background: #ccc;
}
video 1
video 2
video 3
video 4
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