How to add different CSS style to every nth element, depending on n using LESS

Question

I am trying to add different padding to subsequent elements in a div. My DOM looks pretty simple.

<div class="parent">
   <div>0</div>
   <div>15</div>
   <div>30</div>
   ...
</div>

So I would like for my first element to have 0 padding, my second 15, third 30 etc. Using LESS, how could I make this work? I have tried:

.parent div:nth-of-type(n) {
           padding-left: n*15px;
}

Thank you!

Answer 1

I suppose you want to achieve a stair visually. In this case you can do it like below:

.parent {
  line-height: 1.2em;
}

.parent>div:not(:first-child)::before {
  content: "";
  float: left;
  width: 15px; /*your padding*/
  height: calc(1.2em + 2px);

}

<div class="parent">
  <div>0</div>
  <div>15</div>
  <div>30</div>
  <div>45</div>
  <div>60</div>
  <div>75</div>
</div>