<div class="w3tr">
<div class="renk1">W3TR</div>
<div class="renk2">W3TR</div>
<div class="renk3">W3TR</div>
</div>
.w3tr{
display:flex;
height: 200px;
}
.renk1{background: #00FFFF;}
.renk2{background: #DC143C; flex-basis: auto; -webkit-flex-basis: auto;}
.renk3{background: #6495ED;}
This Pen doesn't use any external CSS resources.
This Pen doesn't use any external JavaScript resources.