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Grid with 2 column, vertical align items in second columns if odd number of items

July 23, 2022

I need to create 2 columns layout which will align items in the second column vertically if the number of items is odd. Can’t realize how to do it. A number of items are unknown.

.container {
  border: 1px solid red;
  display: grid;
  grid-auto-rows: 1fr;
  grid-template-rows: auto;
  grid-template-columns: 1fr 1fr;
}

.item {
  border: 1px dashed blue;
  box-sizing: border-box;
  height: 50px;
}

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item">6</div>
  <div class="item">7</div>
</div>

Here is a link to Codepen if someone prefers this editor.
https://codepen.io/anatoly314/pen/bGvRmEa

Thank you!

>Solution :

A hacky solution to use with caution:

.container {
  border: 1px solid red;
  display: grid;
  grid-auto-rows: 1fr;
  grid-template-rows: auto;
  grid-template-columns: 1fr 1fr;
  margin: 5px;
}

.item {
  border: 1px dashed blue;
  box-sizing: border-box;
  height: 50px;
}

/* 
 translate all the elements in the second column 
 when we have odd elements 
*/
.item:first-child:nth-last-child(odd) ~ .item:nth-child(even) {
  transform:translateY(50%);
}

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item">6</div>
  <div class="item">7</div>
</div>

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item">6</div>
</div>

Also like below if you want to fill all the space:

.container {
  border: 1px solid red;
  display: grid;
  grid-auto-rows: 1fr;
  grid-template-rows: auto;
  grid-template-columns: 1fr 1fr;
  margin: 5px;
}

.item {
  border: 1px dashed blue;
  box-sizing: border-box;
  height: 50px;
}


.item:first-child:nth-last-child(odd) ~ .item:nth-child(even) {
  transform:translateY(50%);
}
/* no transform for the fist item in the second column */
.item:first-child:nth-last-child(odd) + .item:nth-child(even) {
  transform: none;
}
/* make first and last item in second column bigger */
.item:first-child:nth-last-child(odd) + .item:nth-child(even),
.item:nth-last-child(2):nth-child(even){
  height: 150%;
}
/* smaller transform for the last item since it's bigger */
.item:nth-last-child(2):nth-child(even) {
  transform:translateY(33%)!important;
}

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item">6</div>
  <div class="item">7</div>
</div>

<div class="container">
  <div class="item">1</div>
  <div class="item">2</div>
  <div class="item">3</div>
  <div class="item">4</div>
  <div class="item">5</div>
  <div class="item">6</div>
  <div class="item">7</div>
  <div class="item">8</div>
  <div class="item">9</div>
  <div class="item">10</div>
  <div class="item">11</div>
</div>