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javascript - CSS/html display list in two columns if more than X amount of elements?

I have a dynamic list of elements. I do not want this list to be too long. I could use:

ul {
    columns: 2;
    -webkit-columns: 2;
    -moz-columns: 2;
}

But this always results in two columns. I would prefer to only have one column if there are only a few elements in the list. So with 5 elements or less, I want this:

1
2
3
4
5
But with 6 or more elements I want this:
1    4
2    5
3    6
I use css3, html, bootstrap 2.3.2 and jquery Do anyone have some tips for the best way to do this? See Question&Answers more detail:os

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by (71.8m points)

If you are able to use CSS grid you can do this with grid-template-rows and grid-auto-flow directive. Grid can be used in most browsers natively and in IE11 with autoprefixer:

.list {
  display: grid;
  grid-template-rows: repeat(5, min-content);
  grid-auto-flow: column;
}
<ul class="list">
  <li class="item">1</li>
  <li class="item">2</li>
  <li class="item">3</li>
  <li class="item">4</li>
  <li class="item">5</li>
  <li class="item">6</li>
  <li class="item">7</li>
</ul>

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