Float

HTML

<div class="wrapper">
<div class="float"></div>
<div class="float"></div>
<div class="float"></div>
<div class="float">vvvvvv</div>
</div>

CSS

.wrapper{
 width:208px; 
 float:left;
 height:600px;
 border:1px solid black;
 flex-wrap: wrap;
}
.float {
display:block;
box-sizing:border-box;
float:left;
background:white;
width:100%;
height:50px;
margin:4px 0;
border:1px solid red;
}

.wrapper .float:last-child {
}