<link rel="stylesheet" type="text/css" href="cs_start.css"><div class="wrapper">
<div class="kastyl">
<div class="item"></div>
<div class="item"></div>
<div class="item"></div>
<div class="item"></div>
</div>
</div>.wrapper {
position: relative;
width: 400px;
border: 1em solid green;
box-sizing: border-box;
margin-bottom: 1em;
}
.kastyl {
display: flex;
justify-content: space-between;
width: 100%;
}