How to alternate div display based on class name

Question

I have the following code to sort two types of equal amounts of elements. However, they are all clumped up. Is there a way to put them into a single column alternating based on class name? E.g. .item1, .item2, .item1, .item2, etc.

.item1 {
  grid-area: myArea1;
}

.item2 {
  grid-area: myArea2; 
}

.item1, .item2 {
  opacity: 0.2;
}

.grid-container {
  display: grid;
  grid-template-areas: 'myArea1' 'myArea2';
  grid-gap: 10px;
  background-color: #2196F3;
  padding: 10px;
}

<div class="grid-container">
  <div class="item1">1</div>
  <div class="item1">11</div>
  <div class="item1">111</div>
  <div class="item1">1111</div>
  <div class="item2">2</div>
  <div class="item2">22</div>
  <div class="item2">222</div>
  <div class="item2">2222</div>
</div>

I'm open to other non-grid, but pure (S)CSS solutions. The number of items is dynamic.

Answer 1

A hacky way like my previous answer

.item1 {
  grid-column: 1;
}

.item2 {
  grid-column: 2;
  align-self: end;
}


.grid-container {
  display: grid;
  grid-template-columns: 0 auto;
  grid-auto-rows: 2lh;
  grid-auto-flow: dense;
  background-color: #2196F3;
  padding: 10px;
}

<div class="grid-container">
  <div class="item1">1</div>
  <div class="item1">11</div>
  <div class="item1">111</div>
  <div class="item1">1111</div>
  <div class="item2">2</div>
  <div class="item2">22</div>
  <div class="item2">222</div>
  <div class="item2">2222</div>
</div>