html.de - DIV in DIV positionieren?

by SpiceLab

HTML

<div class="flex-container">
  <div class="flex-item item1">flex-end</div>
  <div class="flex-item item2">flex-start</div>  
</div>

CSS

.flex-container {
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: space-between;
    justify-content: space-between;
    min-height: 250px;
    background-color: lightgrey;
}
.flex-item {
    background-color: cornflowerblue;
    width: 100px;
    height: 100px;   
}
.item1 {
    -webkit-align-self: flex-end;
    align-self: flex-end;
}
.item2 {
    -webkit-align-self: flex-start;
    align-self: flex-start;
}